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Burnt Brunfelsia

#57237b
Notes

Burnt Brunfelsia (#57237B) is a deep indigo with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (275°, 56%, 31%) 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
#57237b
RGB
rgb(87, 35, 123)
HSL
hsl(275, 56%, 31%)
HWB
hwb(275 14% 52%)
OKLCH
oklch(37.8% 0.144 308.0)
HSV
hsv(275, 72%, 48%)
LAB
lab(25.74% 40.18 -40.20)
LCH
lch(25.74% 56.84 314.98)
CMYK
cmyk(29%, 72%, 0%, 52%)

Etymology

Burnt
adjective

The past participle of burn used as a color modifier — most familiar in burnt sienna and burnt umber, the pigments produced by firing raw earth pigments to deepen and warm them. Implies a color that has been reduced and concentrated by heat, with the slight red-orange shift that high-temperature oxidation introduces. Sits in the dark-and-warm corner of the engine's grid.

Brunfelsia
noun

South American yesterday-today-tomorrow (Brunfelsia pauciflora) — a Brazilian Atlantic forest native shrub whose flowers open deep-violet on day one, fade to lavender on day two, and white on day three. Brunfelsia color refers to a freshly opened day-one Brunfelsia pauciflora flower: a saturated, slightly cool deep violet with the velvet finish of fresh five-petaled flat-corolla. Named for Otto Brunfels, German Renaissance botanist.

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.

#57237b
Original
#003b7e
Protanopia
#0e3d79
Deuteranopia
#51364c
Tritanopia
#343434
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
10.87:1
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
1.93:1

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