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Warm Smut

#15011c
Notes

Warm Smut (#15011C) is a deep violet with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (284°, 93%, 6%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#15011c
RGB
rgb(21, 1, 28)
HSL
hsl(284, 93%, 6%)
HWB
hwb(284 0% 89%)
OKLCH
oklch(14.7% 0.066 317.3)
HSV
hsv(284, 96%, 11%)
LAB
lab(2.39% 11.38 -11.80)
LCH
lch(2.39% 16.40 313.95)
CMYK
cmyk(25%, 96%, 0%, 89%)

Etymology

Warm
adjective

Old English wearm, of moderate heat — used as a color modifier since the medieval period for hues that read as containing red, orange, or yellow undertones. Warm gray, warm white: not necessarily a temperature, but the optical impression of a slight red-orange shift. Sits across the crisp and neutral buckets.

Smut
noun

Old English smot, grime — the deep-soot-black grease-and-creosote residue of chimney-sweeping, steam-locomotive maintenance, and coal-mining clothing. Smut color refers to a freshly accumulated Pennsylvania anthracite-mine smut-coated work-jacket in raking light: a saturated, slightly cool deep black with the matte finish of multi-day soot-and-creosote sediment on coarse-spun woolen work-clothes. Also names the cereal-fungus Ustilago genus.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

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Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#15011c
Original
#00071d
Protanopia
#01091b
Deuteranopia
#15050c
Tritanopia
#070707
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon White
19.94:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
1.05:1

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