Lighter Gunmetal
#606870
9 parts Titanium White, 6 parts Ultramarine Blue and 2 parts Ivory Black. Chromilla's model predicts a 93% dry match against the target, scored against its own color model, not a measured paint-out.
To mix gunmetal (#4A5259) in watercolor, use 91% Viridian Green, 5% Alizarin Crimson and 4% Yellow Ochre. Chromilla's model predicts a 94% dry match against the target, scored against its own color model, not a measured paint-out. Chromilla is a web-based paint color mixer that turns any color, from a photo, the camera or a hex code, into exact paint-tube ratios for acrylic, oil and watercolor, using Kubelka-Munk pigment mixing and aiming at the color after it dries.
Target
Gunmetal
#4A5259
Predicted dry result
94% match when dryMix to #4A535A while wet. It dries to about #434C55.
| Paint | Pigment | Share | 100 ml batch |
|---|---|---|---|
| Viridian Green | PG18 | 91% | 91 ml |
| Alizarin Crimson | PR83 | 5% | 5 ml |
| Yellow Ochre | PY43 | 4% | 4 ml |
How we calculated this: Kubelka-Munk pigment mixing, then a per-medium dry shift, scored with CIEDE2000. Method and accuracy benchmark. Last checked August 2026.
Terms used here: Tinting strength, Dry shift, Kubelka-Munk, Delta E (dE2000), Pigment code, Gamut.
A dark, cool metallic-look gray. This guide gives you the pigment ratios that land on #4A5259 in watercolor, using the same solver that powers the Chromilla mixer.
Checked August 2026
Ratios calibrated for watercolor. Start with the dominant pigment, add the modifiers in the order below, and adjust in 5% steps to your target swatch.
1. Viridian Green
PG18
2. Alizarin Crimson
PR83
3. Yellow Ochre
PY43
Viridian Green, Alizarin Crimson, and Yellow Ochre, in roughly a 91:5:4 ratio.
Start with Viridian Green at about 91% as your watercolor base, then work in Alizarin Crimson and Yellow Ochre in the order above. Adjust in 5% steps until the swatch reads #4A5259.
Mixing Gunmetal yourself lets you approximate an expensive or hard to find tube from pigments you already own, match Gunmetal across paint brands whose factory tubes differ, and rebuild the exact color when you run out mid painting. The recipe above is the working starting point.
Overshooting on Viridian Green is the usual failure, add it in 5% steps and compare against the target between each pass.
Each variation is its own target (lighter and darker move OKLCH lightness by 0.08; warmer and cooler turn the hue 12 degrees toward red or blue), solved fresh.
#606870
9 parts Titanium White, 6 parts Ultramarine Blue and 2 parts Ivory Black. Chromilla's model predicts a 93% dry match against the target, scored against its own color model, not a measured paint-out.
#353D43
53% Ultramarine Blue, 43% Yellow Ochre and 4% Alizarin Crimson. Chromilla's model predicts a 95% dry match against the target, scored against its own color model, not a measured paint-out.
#4B515A
3 parts Ultramarine Blue, 2 parts Titanium White and 1 part Ivory Black. Chromilla's model predicts a 94% dry match against the target, scored against its own color model, not a measured paint-out.
#4B515A
3 parts Ultramarine Blue, 2 parts Titanium White and 1 part Ivory Black. Chromilla's model predicts a 94% dry match against the target, scored against its own color model, not a measured paint-out.
Open the live mixer with Gunmetal + watercolor pre-loaded and calibrate to your tubes.
Pigment mixing is subtractive, so small ratio changes matter. The mixer refines this recipe to your brand and updates on the fly.