Why You Should Never Shade With Black

Pure black shadows flatten a miniature. Learn why experienced painters shade with dark blues and browns instead — and how to pick the right one for your base color.

The problem with pure black

Here is the one decision this article teaches: when you reach for a shadow color, choose one that is darker and often a little richer than your base — never just “the base plus black.” Everything below is the why behind that rule, and by the end you will be able to break it on purpose in the few places it deserves breaking.

To see the problem, we need one term defined precisely. Chroma is the absolute amount of color in a color — how far it sits from neutral gray. It is close to what painters loosely call saturation, but chroma is an absolute quantity rather than a ratio, and that distinction is going to do real work across this whole series. Black has zero chroma in every color space ever devised. So when you mix black into any paint, two things happen at once: lightness drops (which you wanted) and chroma collapses toward zero (which you almost never wanted). You are not just darkening the color — you are draining the color out of it. That is arithmetic, not a style opinion.

On the model, the drained version reads as exactly what it is: a gray-ish, lifeless recess. A mid-blue armor panel shaded with black turns into flat navy-gray in the deep folds, and at arm’s length the blue identity of the whole panel weakens. One acrylic-painting guide puts it bluntly: “Using black directly to create shadows... is a trap!” The trap is that it looks reasonable on the palette and only reveals the flatness once it is dry and sitting next to the rest of the model.

What richer shadows actually look like

Real-world shadows are not achromatic (an achromatic color is one with zero chroma — black, white, and the grays between). A shadowed surface still receives light: skylight, bounce light off the ground and nearby objects, all of it tinted. That is why observational painters have insisted for well over a century that shadows have color. The Impressionists — Monet and Degas among them — famously refused flat black shadows, mixing what are called chromatic blacks instead: near-black mixes with a living color bias, the classic recipe being ultramarine blue plus burnt sienna. Squint at one of their canvases and the shadows lean violet, blue, or warm brown — never dead neutral.

For us at the painting desk the working rule is simple: a good shadow color is darker in value, holds or even gains a little chroma, and usually leans slightly cooler in hue than the base. “Richer, not muddier” is the phrase we use throughout PaintGuide, and it is literally encoded in how our ladder math works — every shade step the app suggests nudges chroma up, not down, precisely so your recesses stay alive.

One honest nuance before we go on: mixing physical paint is subtractive pigment chemistry, and it does not behave identically to the clean digital arithmetic above. Adding real black paint to real yellow, for example, can drag the mix greenish in ways the math alone would not predict. The two stories — digital chroma collapse and wet-palette pigment behavior — reinforce each other, but they are different processes, and we will not pretend otherwise.

Picking a shade color for your base

Let us make it concrete with a paint you may well have on your rack. Take Citadel Macragge Blue, a classic mid-blue armor base. The naive shade is Macragge plus black: the result is a flat, desaturated navy-gray, and in a deep recess it stops reading as blue at all. The chromatic shade is a darker, slightly purple-leaning blue — Citadel Kantor Blue sits almost exactly there — so the recesses stay recognizably blue, just deeper and richer. Same value drop, completely different life on the model.

The pattern generalizes: shade a color with a darker neighbor that leans cool — blues toward blue-purple, reds toward deep crimson-purple, greens toward blue-green, warm skin toward red-brown. You do not have to memorize a table, because this is exactly what the ladder tool on this page computes. Pick your own blue below — or any base paint you actually own — and watch where the two shadow rungs land: darker, a touch richer, nudged cool. Then take that suggestion to the model with a wash in the recesses or a glaze over the lower halves of each surface.

A misconception worth killing explicitly: you may have heard that a shadow is “just a darker version of the object’s color.” Here is what is actually happening — darkening alone, done in a perceptually uniform color space, would hold chroma roughly constant, and even that tends to look slightly flat. Black-mixing actively destroys chroma on top of the darkening. The two operations feel similar on the palette and behave very differently on the model.

When black-ish is actually fine

“Never” is a teaching exaggeration, and we would rather tell you where the boundary really sits. If the base color itself has very low chroma — gunmetal, ash gray, genuinely black armor or leather — then a near-neutral shadow is correct, because there is barely any chroma to preserve in the first place. Shading true black is its own art (it is mostly about highlighting, in fact — the recesses are already as dark as they get), and the extreme case, painting reflective black or metal with pure color, is the whole discipline of non-metallic metal, where painters push chromatic shadows harder than anywhere else on the model.

It is also worth naming the shortcut culture around this honestly. Washes and pre-mixed shades are wonderful tools — we teach them as a foundational technique — but parts of the hobby treat them as the permanent answer to all shading, and some voices argue painters should graduate past them entirely toward hand-blended, deliberately chosen shadow colors. Our position is in the middle: use washes freely, but choose which wash by the logic above rather than defaulting to the darkest bottle on the rack. A blue-purple wash over blue armor is applying color theory; black wash over everything is skipping the decision, and the decision is the part that makes your minis look painted rather than dipped.

If you want the full mechanism — exactly how many lightness points down, how much chroma up, how many degrees cool — that is Article 6, where we open up the actual math PaintGuide runs.

Ladder Explorer

Pick any paint to see its suggested shade and highlight partners, computed live from the full catalog.

Try it live: search for Macragge Blue (or any blue you own) and watch where the shadow rungs land — darker, slightly richer, nudged cool.

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Frequently Asked Questions

Is black wash ever okay to use?

Yes — over bases that are already near-neutral, like gunmetal, ash gray, or true black leather and armor, where there is little chroma to protect. Over any color with real chroma in it, a black wash drains the color from the recesses and flattens the model. Reach for a darker, cooler version of your base color instead, and save the black wash for the genuinely neutral zones.

What color should I shade red armor with?

Shade red with a darker crimson or red-purple rather than black — the recesses stay recognizably red, just deeper and richer. A deep wine or maroon tone works on almost any mid red. Adding black instead pushes red toward a flat brownish gray, which is exactly the lifeless look this article is about avoiding.

Why do my shadows look flat even with a colored wash?

Usually the wash is too close to neutral, or it landed everywhere instead of pooling in the recesses. Check that your shade color is actually darker AND at least as chromatic as the base — a dark but grayish wash flattens almost as much as black does. Application matters too: a targeted recess wash keeps the mid-tones clean, while an all-over wash dulls the whole surface.