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Gladiatorial Orpiment

#b23a0d
Notes

Gladiatorial Orpiment (#B23A0D) is a true orange 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 (16°, 86%, 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
#b23a0d
RGB
rgb(178, 58, 13)
HSL
hsl(16, 86%, 37%)
HWB
hwb(16 5% 30%)
OKLCH
oklch(51.8% 0.164 37.7)
HSV
hsv(16, 93%, 70%)
LAB
lab(42.04% 46.98 49.61)
LCH
lch(42.04% 68.33 46.56)
CMYK
cmyk(0%, 67%, 93%, 30%)

Etymology

Gladiatorial
adjective

Latin gladiātōrius, of the gladiator — adjectival suffix, derived from gladius (short-sword). As a color modifier, gladiatorial implies a saturated-and-combative-and-bloody quality, the deep-rich color of Roman-Colosseum gladiator-arena bloody-tunic-and-shield combat-attire. Sits at the bold-and-formal end of the grid, parallel to spartan and valiant.

Orpiment
noun

An arsenic-sulfide mineral pigment — used since classical times for the yellow-orange of medieval illuminated manuscripts and Persian miniature painting. The color refers to ground orpiment in a Renaissance illuminator's shell: a saturated, slightly cool yellow-orange with the resinous shine of crystalline arsenic compound. Cooler than realgar, brighter than ochre.

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.

#b23a0d
Original
#5e5202
Protanopia
#7b6d01
Deuteranopia
#c41033
Tritanopia
#505050
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
5.99:1
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
3.50:1

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