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How the numbers are calculated
Source data
Color names, numbers, RGB/hex values and LRVs come from each brand's public website: the Sherwin-Williams color API, Benjamin Moore color pages, and Behr's public color list. Behr does not publish LRV, so Behr LRVs are estimated as relative luminance Y × 100 from the sRGB value. Data was collected in October 2026.
Lab values
Hex is converted from sRGB (D65) to CIE XYZ and then to CIELAB (D65 white point). Chroma C* = √(a*² + b*²) and hue angle h = atan2(b*, a*).
Undertone
The hue angle names the undertone: under 25° pink, 25–55° red, 55–80° orange, 80–105° yellow, 105–170° green, 170–225° blue-green, 225–290° blue, 290–330° purple, 330–360° pink. Chroma sets its strength: under 2 none (true neutral), 2–6 subtle, 6–15 noticeable, 15+ a saturated color rather than a neutral.
Warm or cool
Warm when the hue angle is under 105° or above 330° (red, orange, yellow, pink side); cool from 170° to 300° (blue-green to blue); in between is neutral-warm or neutral-cool; chroma under 2 is neutral. "Warmer than N%" compares b* (yellow–blue axis) with the same brand's colors within ±5 LRV.
LRV bands
70+ very light, 50–70 light, 30–50 mid-tone, 15–30 dark, under 15 very dark.
Closest matches
Every color is compared with every color of every brand using CIEDE2000 (ΔE00). Under 1 is practically identical, 1–2 very close, 2–4 visible side by side, 4–8 clearly different.
Lighter, darker and pairings
Lighter/darker versions are same-brand colors within a small a*b* distance (6 + 0.15 × C*) of the color, ordered by L*. Complementary, analogous and triadic pairings rotate the hue angle by 180°, ±30° and ±120° at the same L* and C*, then take the nearest same-brand color by ΔE00. Sherwin-Williams' own coordinating colors are shown as published.