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Hooded Crocus

#51156b
Notes

Hooded Crocus (#51156B) 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 (282°, 67%, 25%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#51156b
RGB
rgb(81, 21, 107)
HSL
hsl(282, 67%, 25%)
HWB
hwb(282 8% 58%)
OKLCH
oklch(34.1% 0.143 313.1)
HSV
hsv(282, 80%, 42%)
LAB
lab(21.38% 41.37 -37.02)
LCH
lch(21.38% 55.51 318.18)
CMYK
cmyk(24%, 80%, 0%, 58%)

Etymology

Hooded
adjective

Old English hōd, hood — past-participle of hood, sharing root with German Hut (hat). As a color modifier, hooded implies the deep-and-veiled-and-fabric-shrouded quality of monk-and-friar enveloping-cowled-cloak silhouette in Cistercian-and-Benedictine monastic tradition. Sits at the deep-and-veiled end of the grid, parallel to cloaked and mantled with monastic register.

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.

#51156b
Original
#00306d
Protanopia
#0a3569
Deuteranopia
#4e293f
Tritanopia
#282828
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
12.58:1
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
1.67:1

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