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Utilitarian Cuivré

#8b3e1e
Notes

Utilitarian Cuivré (#8B3E1E) is a deep 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 (18°, 64%, 33%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#8b3e1e
RGB
rgb(139, 62, 30)
HSL
hsl(18, 64%, 33%)
HWB
hwb(18 12% 45%)
OKLCH
oklch(46.0% 0.114 41.6)
HSV
hsv(18, 78%, 55%)
LAB
lab(36.04% 30.67 34.38)
LCH
lch(36.04% 46.07 48.27)
CMYK
cmyk(0%, 55%, 78%, 45%)

Etymology

Utilitarian
adjective

Latin ūtilitās, usefulness — adjectival suffix -ian. As a color modifier, utilitarian implies a clear-and-purpose-fit-and-stripped-down quality, the crisp color of Shaker-and-Quaker anti-ornamental functional-and-no-frills craft tradition. Sits at the crisp-and-functional end of the grid, parallel to functional and workmanlike in usage.

Cuivré
noun

The French word for coppered or copper-tone — used in fashion vocabulary for the warm metallic orange of polished copper or auburn hair. The color refers to a freshly polished copper kettle: a warm, slightly red metallic orange with the satin finish of unoxidized metal. The French cousin of copper.

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.

#8b3e1e
Original
#534a1a
Protanopia
#665b1c
Deuteranopia
#992d37
Tritanopia
#4c4c4c
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
7.49:1
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
2.81:1

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