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Brilliant Butternut

#f58b31
Notes

Brilliant Butternut (#F58B31) is a true orange with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (28°, 91%, 58%) 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 azure. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#f58b31
RGB
rgb(245, 139, 49)
HSL
hsl(28, 91%, 58%)
HWB
hwb(28 19% 4%)
OKLCH
oklch(73.8% 0.161 55.9)
HSV
hsv(28, 80%, 96%)
LAB
lab(68.10% 34.15 62.07)
LCH
lch(68.10% 70.84 61.18)
CMYK
cmyk(0%, 43%, 80%, 4%)

Etymology

Brilliant
adjective

From the Italian brillante, sparkling — used as a color modifier since the seventeenth century for hues that read as optically active beyond their literal saturation. Brilliant green, brilliant blue: the implication is luminance combined with the slight sparkle of a high-refractive surface. Sits at the bright-bucket center alongside vivid and bright.

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

Click any swatch to explore

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.

#f58b31
Original
#aa9722
Protanopia
#c4af30
Deuteranopia
#ff7479
Tritanopia
#9b9b9b
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).
Failon White
2.44:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
8.62:1

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