Thought this might be useful to someone out there.... I taught this stuff for years and mixing colors is my profession; so it's only fitting that I write a blurb about the topic as it relates to ship modelling.
When it comes to ship colors, we are often confused by certain colors and aren't sure why they aren't correct. Threads are written about certain manufacturers and their mixes of certain naval colors and their accuracy is debated as they relate to other manufacturers. Vague terms such as "shade" and "more bluish" are used to describe what is actually a very technical and easily learned science: Color theory. That's what this is about.
Whether you mix your own colors like I do or buy pre-mixed tints, I find it very useful to understand the mechanics of what color is and how they interrelate with each other.
Basic Colour TheoryTheoretically, every color imaginable is created by combining the three primary colors and modifying them with white or black. This is an oversimplification, but fundamentally this is correct. Put more realistically, Reddish colors, Bluish colors, and yellowish colors are know as the primary triad. With these colors you can mix the secondary colors: Orangy colors, Greenish colors, and purples. In real life, 'Earth colors" (reddish browns, woody yellows, and chocolate browns also play a key role in modifying and mixing colors.
Attached is an image of the color wheel. This is a diagram that illustrates how colors mix. It is a visualization that reduced color mixing down to the theoretical essence. The primaries are situated at the corners of a triangle. The colors that are mixed through their interaction are situated in a secondary triangle. The primary and secondary triads, as they're referred to. Notice how on the color wheel, every color has an opposite. For example, across from blue there is orange. From Red, there is green. These are 'compliments'. They're easy to remember because they are often used in art and design because they can work well together. Christmas (red, green) Easter (yellow, purple) , Halloween (orange, dark blue). Anyway, the only thing you need to know about compliments is that when mixed, they kill each other's intensity until, when mixed equally, they theoretically make gray. In reality, perfect gray is seldom the result, but the effect of diminished intensity holds true. Imagine you have a Royal Navy blue color and you are finding it way too intense. One way to soften this color would be to add a bit of an orangy color to it. A few drops of a Tamiya color such as "leather" or racing orange will soften your Tamiya bluish hue down a bit. Adding black to a color has a similar effect. I actually do most of my dulling with black and white. Regardless, this complimentary device is critical to know when mixing your own colors. The presence of a color's compliment can be an important factor in assessing it's hue. This law isn't relegated to pure primaries. For example a greenish color can be softened out and killed a bit by adding not a bright red, but an earthy reddish color such as burnt sienna (reddy brown.)
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Anyway, the main thing to realize is what colors mix with what and what do they result in. That's what the color wheel is. This colors are then adjusted with white or black or other colors to yield more specific hues.
But being ship modellers, our task of mixing colors is extremely easy as you will see in a moment. They're some of the easiest colors to mix!
Colors are made by grinding pigments up and combining them with binders, curing agents, vehicles (linseed oil, enamel etc). Depending on what pigments are used, the primary colors can be very different. For example, some blues appear to be more turquoise whereas other blues appear more like the color of Smurfs, still other blues are almost purple in appearance. Fundamentally, there a limited number of primary pigments. All paint manufacturers use them and they are the backbone of the color industry. Ultramarine blue, Cerulean blue, Thalo blue, Prussian blue, are but of a handful of blue pigments used to make paint; each is vastly different than their colleagues and produce very different types of blues. Nearly all Royal Navy colors can be mixed with a combination of thalo blue and a certain measure of Ultramarine blue. This is what gives RN colors their distinctly Turquoise look. Western Approaches blue or green are hands-down thalo based colors. The US navy however has next to no colors that are thalo based. It used Ultramarine type blue-based colors almost exclusively. Side by side, US colors clearly illustrate their ultramarine origins vs. RN's Thalo origins.
For ship modelling and most military applications, there is only one thing you need to know about Primaries, specifically blue. In not so technical terms, there are blue pigments that have a hue like blueberries and bluejeans, and there are blues that are like turquoise and indigo. When considering a mix, it is crucial that the correct type of blue is used. I'm picking on blue because In ship modelling, blue is the primary color that is used the most. Each primary color (red, yellow, blue) have vastly different types of pigments that represent them. For example, some reds are like santa's suit whereas other reds are more like a cherry. This would be the difference between say Cadmium red medium and Quinacridone red. Back to ships, in a nutshell, the RN used a combination of both turquoise (thalo) blues and Ultramarine blues; the thalo aspect which giving them their distinctly turquoise appearance while the US Navy seems to have no thalo (turquoise) based colors.
Turquoisy blues:
Thalo, Prussian, thalo green,
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Blueberry blues:
Ultramarine
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Kind of like both:
Cerulean, Cobalt
Using the correct blue in a ship mix is crucial.RN= turqoisy+ultramarine
US=Ultramarine
As ship modellers, blues and greys are our most predominantly used colors. Understanding the look of the root colors will help you to understand why a color isn't looking correct. In most cases when it comes to bluish tints, the culprit is the type of blue used. But that's not all; which leads to a discussion of WHY colors are incorrect and understanding with greater accuracy what the problem is.
As I mentioned before, as well as pigments for the primary colors, there are also pigments that are know as 'earth pigments'. These pigments are usually derived from minerals that yield softer, more earthy tones such as red oxide, browns, and ocher colors (woody yellows).
These earth tones are used extensively to modify and adjust the chroma of the more vibrant colors. Interestingly, the red that hulls are painted were often the earth color red-oxide lead. This pigment was cheap and readily available hence its use. In photos, the red can look quite vibrant. In real life, it would have definitely appeared more like a moderately intense reddish rust color.
Mixing and understanding Navy colors.Most WW2 naval colors begin their mix with black and white to make gray. Some grays contain more white, some more black. But neutral gray is the backbone of most naval colors. If you were to mix a ship color, this is the most effective way to begin the mix. To this mix, other colors are added to yield the final color. What colors? Well, military colors are surprisingly easy to understand and mix. Virtually all military and ship colors can be mixed using often just 2 or 3 of the following pigments:
-White
-Black
-Ultramarine Blue (blueberries)
-Thalo Blue (turqoise)
-Burnt Sienna (functions on the color wheel as red). It's a brick/earthy tone.
-Raw sienna (functions as yellow on the color wheel). It's an ochre type yellowy brown.
-Occasionally primary yellow (cadmium yellow light or equivalent) Lemon yellow.
-Occasionally some kind of bright red (cadmium red light or equivalent). Santa's suit
-Occasionally for RN colors Thalo green.
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Nearly every commercially produced military color is a grey base with the addition of only one or two colors...usually an 'earth color' (burnt sienna, raw sienna).
I recently was commissioned by a guy to mix him jars of every single RN and US color as they appear on Snyder and Short's color sample sheets. Most, or rather all of the colors had this kind of mixology:
black+white= 507C
black+white+ultramarine blue+thalo blue=B6
Black+white+Ultramarine blue+thalo blue+raw sienna=MS3
black+white+ultramarine blue=US navy deck
black+white+ultramraine blue (different quantities than US navy deck) = most US navy camouflage colors.
Etc. etc. etc.
Glancing at the IJN sheets, most of those gray mixes are black+white+blue. I'd have to do some mixing to assess if the correct blue is ultramarine or thalo in nature. Regardless, easy peasy.
Decks:
black+white+raw sienna (depending on quantities will make a lighter deck)
black +white+burnt sienna+raw sienna (teak)
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So you can see how simplistic and repetitive these mixes are. After a while, I was able to simply glance at the Snyder and Short color sample and instantly know the mix.
Given this, I find it interesting how many colors are available to the hobbyist and am shocked by how many of those colors are simply the same colors over and over again with varying degrees of white or black!
So,
When it comes to troubleshooting a color or discussing it's nature, there is a language that can be used to achieve greater descriptive accuracy.
When a color appears incorrect, there is a limited number of things that can be wrong with it. The first thing that can be assessed is its value. The value is the color's darkness or lightness. If you were to take a black and white photograph of the color, this would be it's value. If the value of the color is wrong, it must be darkened or lightened. Perhaps simply adding some white to it could be the fix. Or may the color is too light; in this case adding more color into the mix to reduce the percentage of white could be the fix.
If the value of the color is correct, but it still feels wrong, then perhaps the hue is off. The hue is the chromatic description of the color (red, greenish etc.). The hue can be off in two ways: 1. The mix contains incorrect proportions of the component colors. "My B6 is incorrect because I've used too much ultramarine blue. 2. The mix contains the incorrect pigment. "My US deck color is wrong because I used thalo blue instead of Ultramarine blue."
People who work with color professionally could instantly visualize a color through phraseology like this: "The color is a low saturation, mid-value blue-green biased hue of thalo origins modified with burnt sienna."
At the risk of sounding like a pitch-man for Golden Acrylics:
Imagine being able to mix large quantities of your own modelling colors as per the exact hue and value you want? It's a great skill to have. It's also dirt-cheap. A single large bottle of Golden Airbrush high flow paint is 25 bucks. One small tin of model paint can be nearly ten dollars! I can mix a cup of B6 for next to nothing.
Given my ability to mix paint (and it's nothing more than what I've outlined in this post), I ultimately decided to use High Flow acrylics for airbrush by Golden exclusively in my modelling. These paints are airbrush ready out of the bottle, clean up with water, cure in minutes and hand-brush like a dream out of the bottle. I have large bottles of the base colors I listed and I mix all my modelling colors from these. I save bundles of money doing it this way and feel I have greater control over my color mixes.
Modifying hobby paintBased on everything I said earlier, it should come as a revelation that nearly all colors that you can buy for ship modelling are based on a very limited number of pigments that are repeated over and over in differing quantities. Give this, it shouldn't be too hard to modify hobby paint to be more accurate should you feel that the mix is incorrect.
1. The mix is based on a black+white architecture. Is the color too light or too dark?
2. To the grey framework, one or two colors have been added. If the color appear bluish, a blue pigment has been added. Is the blue pigment correct? If it appears turquoise, then thalo/cerulean blue has been used. If this turquoise color is incorrect, then the wrong blue was used. I've seen RN colors made with Ultramarine blue or too much Ultramarine blue and it's the main reason for the inaccuracy.
3. Is there a pigment in the manufacturer's line that approximates the desired addition to the color or is closer in color to the desired effect? Is there a color in the line that can be added to the offending color to achieve the desired effect?
Separate the problem of mixing color into its value and chroma components.
Ocean ColorsThe sea can be painted in a vast range of hues and values.
When mixing a sea color, you have to consider the darkness or lightness of the sea and it's blue-base (thalo or ultramarine based). They have different looks. Predominantly, the ocean is a combination of the two leaning towards thalo bias. A typically 'blue' sea in it's rawest look is quite close to Cobalt blue.
When mixing an ocean color, first choose what blue you want to use. If you want, you can then add black and or white to this blue to modify its intensity and darkness/lightness. To this mix, you can then add an earth color; either raw sienna or raw umber. Of course, any color can be added, but you'll be amazed at the versatility of simple 'earth' colors.
The wake color is that minty, frothy color of the sub-surface churn. It is most often a soft, light value minty, thalo-based green-blue. Much like mints in a jar. Technically, this color occurs as a result of white foam that is under a few feet of blue water resulting in a darkened hue. The sun, in combination with greenness of the water produces the minty quality. Sometimes, the subsurface churn is simply a lighter version of the sea color. I made a chart that describes this all visually and provides some ideas for different ocean colors.
Rule of thumb:
On an overcast day, colors are less saturated and appear more gray. Rich color saturation is a product of more intense light. A stormy scene might benefit by having many greys and low intensity minty colors in the wake. A hot, sunny day in the pacific might have more intense blues and a more punchy mint color in the wake.
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The diagram says it all.
Anyway, color and painting is my favorite and most confident part of a build and I hope that this can be useful to someone out there...if even just as a new way of understanding and describing color. "Bluish grey" means little ..... "Medium-low vlaue, high saturation Ultramarine blue-green" means a whole lot more!