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Bleak Rush

#255302
Notes

Bleak Rush (#255302) is a deep lime 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 (94°, 95%, 17%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#255302
RGB
rgb(37, 83, 2)
HSL
hsl(94, 95%, 17%)
HWB
hwb(94 1% 67%)
OKLCH
oklch(39.4% 0.116 136.2)
HSV
hsv(94, 98%, 33%)
LAB
lab(30.84% -29.93 37.21)
LCH
lch(30.84% 47.75 128.81)
CMYK
cmyk(55%, 0%, 98%, 67%)

Etymology

Bleak
adjective

Old Norse bleikr, pale — sharing root with English bleach. As a color modifier, bleak implies a deep-and-cold-and-comfortless quality, the dark gray-pale of Yorkshire-Moors and Hebrides late-winter atmospheric-light. Sits at the deep-and-cool end of the grid, parallel to grim and bitter in atmospheric register.

Rush
noun

The genus Juncus — wetland sedge-family plants whose hollow green stems were used historically for rushlights (torches dipped in tallow) and traditional weaving. The color refers to a clump of fresh rushes in a damp meadow: a saturated, slightly cool deep yellow-green with the matte finish of round hollow stalks.

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.

#255302
Original
#564b00
Protanopia
#50470d
Deuteranopia
#234f45
Tritanopia
#434343
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
9.06:1
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
2.32:1

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