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Highborn Surkh

#d31f04
Notes

Highborn Surkh (#D31F04) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (8°, 96%, 42%) 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
#d31f04
RGB
rgb(211, 31, 4)
HSL
hsl(8, 96%, 42%)
HWB
hwb(8 2% 17%)
OKLCH
oklch(55.5% 0.214 31.0)
HSV
hsv(8, 98%, 83%)
LAB
lab(45.42% 65.49 57.54)
LCH
lch(45.42% 87.18 41.31)
CMYK
cmyk(0%, 85%, 98%, 17%)

Etymology

Highborn
adjective

Old English hēah-boren, high-born — past-participle of bear. As a color modifier, highborn implies a saturated-and-aristocratic-and-elite quality, the deep-rich color of pre-modern English high-born aristocratic-class livery-and-armorial bearings. Sits at the bold-and-aristocratic end of the grid, parallel to noble and aristocratic in usage.

Surkh
noun

The Persian word for red in its most saturated, formal sense — used in Iranian poetry and miniature painting for the ribbons of court banners, the robes of warriors, and the high-saturation reds of Safavid tile. The color refers to a surkh-dyed Persian carpet: a saturated, slightly cool deep red with the matte finish of plant-dye-on-wool. Deeper than crimson, warmer than burgundy.

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.

#d31f04
Original
#5f5300
Protanopia
#897900
Deuteranopia
#e9001e
Tritanopia
#434343
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
5.29:1
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
3.97:1

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