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Hardy Butternut

#b52e08
Notes

Hardy Butternut (#B52E08) is a true red 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 (13°, 92%, 37%) places it in the highly saturated band at a mid 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b52e08
RGB
rgb(181, 46, 8)
HSL
hsl(13, 92%, 37%)
HWB
hwb(13 3% 29%)
OKLCH
oklch(51.1% 0.177 34.4)
HSV
hsv(13, 96%, 71%)
LAB
lab(40.89% 52.56 50.69)
LCH
lch(40.89% 73.02 43.96)
CMYK
cmyk(0%, 75%, 96%, 29%)

Etymology

Hardy
adjective

Old French hardi, bold / brave — past-participle of hardir (to make brave). As a color modifier, hardy implies a saturated-and-cold-resistant quality, the deep-rich color of Scandinavian-and-Russian boreal-forest-and-tundra outdoor-clothing. Sits at the bold-and-resilient end of the grid, parallel to tough and resilient.

Butternut
noun

Cucurbita moschata — the cream-skinned, orange-fleshed squash that became the dominant winter cultivar across North American kitchens in the late twentieth century. The color refers to roasted butternut flesh: a soft, slightly red yellow-orange with the matte finish of cooked squash. Cooler than kabocha, warmer than cantaloupe.

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.

#b52e08
Original
#584d00
Protanopia
#796b00
Deuteranopia
#c80029
Tritanopia
#484848
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).
AAon White
6.25:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.36:1

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