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Crypted Crocus

#510749
Notes

Crypted Crocus (#510749) 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 (306°, 84%, 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#510749
RGB
rgb(81, 7, 73)
HSL
hsl(306, 84%, 17%)
HWB
hwb(306 3% 68%)
OKLCH
oklch(30.5% 0.127 333.5)
HSV
hsv(306, 91%, 32%)
LAB
lab(17.38% 39.28 -20.68)
LCH
lch(17.38% 44.39 332.24)
CMYK
cmyk(0%, 91%, 10%, 68%)

Etymology

Crypted
adjective

Greek kryptē, hidden chamber — past-participle of crypt. As a color modifier, crypted implies the deep-and-funereal-and-architectural quality of medieval European cathedral-and-basilica royal-crypt-chamber underground architecture, particularly the Saint-Denis and Westminster-Abbey royal-funerary tradition. Sits at the deep-and-funereal end of the grid, parallel to sepulchral and tomblike.

Crocus
noun

The genus Crocus — small autumn or spring corms that flower before their leaves emerge, push through snow in March, and include C. sativus, the source of saffron. The color refers to a fresh blue-violet spring crocus: a saturated, slightly violet-shifted deep blue with the satiny finish of a six-petaled cup catching morning light. Cooler than amethyst, warmer than iris, with the seasonal weight of a flower that arrives weeks before everything else.

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.

#510749
Original
#04244b
Protanopia
#232e47
Deuteranopia
#551029
Tritanopia
#1b1b1b
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
14.22:1
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
1.48:1

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