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Suffocating Hesperis

#3f1665
Notes

Suffocating Hesperis (#3F1665) 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 (271°, 64%, 24%) 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
#3f1665
RGB
rgb(63, 22, 101)
HSL
hsl(271, 64%, 24%)
HWB
hwb(271 9% 60%)
OKLCH
oklch(31.1% 0.130 303.1)
HSV
hsv(271, 78%, 40%)
LAB
lab(18.23% 35.77 -38.33)
LCH
lch(18.23% 52.43 313.02)
CMYK
cmyk(38%, 78%, 0%, 60%)

Etymology

Suffocating
adjective

Latin suffocāre, to choke — present-participle of suffocate. As a color modifier, suffocating implies a deep-and-overwhelming-and-pressing quality where the hue overwhelms the eye's capacity to discern surface detail. Sits at the deep-and-overwhelming end of the grid, parallel to smothering with breath-restricting register.

Hesperis
noun

Eurasian Dame's rocket (Hesperis matronalis) — an evening-fragrant Brassicaceae perennial whose deep-violet four-petaled flowers naturalized across European hedgerows since the Roman era. Hesperis color refers to a fully bloomed Hesperis matronalis terminal raceme: a saturated, slightly cool deep violet with the velvet finish of fresh four-petaled flowers. The genus name comes from the Greek hespéra (evening), after the dusk-fragrance peak.

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.

#3f1665
Original
#002c67
Protanopia
#002c63
Deuteranopia
#372a3c
Tritanopia
#242424
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
13.87:1
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
1.51:1

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