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Stained Sumi

#25104d
Notes

Stained Sumi (#25104D) is a deep indigo 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 (261°, 66%, 18%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#25104d
RGB
rgb(37, 16, 77)
HSL
hsl(261, 66%, 18%)
HWB
hwb(261 6% 70%)
OKLCH
oklch(24.7% 0.105 292.8)
HSV
hsv(261, 79%, 30%)
LAB
lab(11.27% 26.80 -33.67)
LCH
lch(11.27% 43.03 308.52)
CMYK
cmyk(52%, 79%, 0%, 70%)

Etymology

Stained
adjective

Old French desteindre, to discolor — past-participle of stain. As a color modifier, stained implies a deep-pigment-and-permanent quality where the hue has bonded with the substrate fiber. Sits at the deep-and-pigmented end of the grid, parallel to dyed and suffused in usage.

Sumi
noun

Japanese ink stick, made from soot of pine resin or sesame oil mixed with animal-glue binder, used in sumi-e brush painting and shodō calligraphy. Although nominally black, undiluted sumi on rice paper carries a deep blue-violet undertone. Sumi color refers to a heavily-loaded sumi brushstroke: a saturated, slightly cool deep blue-violet with the matte finish of pine-soot ink on absorbent washi.

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

Click any swatch to explore

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.

#25104d
Original
#001f4f
Protanopia
#001d4c
Deuteranopia
#19202d
Tritanopia
#191919
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
16.67:1
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
1.26:1

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