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Utilitarian Ambra

#66540b
Notes

Utilitarian Ambra (#66540B) is a deep amber 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 (48°, 81%, 22%) places it in the highly saturated band at a dark 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#66540b
RGB
rgb(102, 84, 11)
HSL
hsl(48, 81%, 22%)
HWB
hwb(48 4% 60%)
OKLCH
oklch(45.1% 0.088 93.6)
P3
color(display-p3 0.3886 0.3321 0.1105)
HSV
hsv(48, 89%, 40%)
LAB
lab(36.35% -0.21 40.95)
LCH
lch(36.35% 40.95 90.29)
CMYK
cmyk(0%, 18%, 89%, 60%)

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.

Ambra
noun

The Italian word for amber — likewise borrowed via Arabic. Ambra in Italian fashion vocabulary names a slightly warmer, deeper gold-orange than its Spanish cousin. The color refers to Sicilian amber on display in Catania: a warm, slightly translucent deep gold-orange with the optical depth of fossil resin.

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.

#66540b
Original
#5e5200
Protanopia
#635811
Deuteranopia
#6f4c47
Tritanopia
#535353
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
7.40:1
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
2.84:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##66540B
Display P3
Display P3
color(display-p3 0.3886 0.3321 0.1105)
P3 has subtle headroomOKLCH chroma 0.088

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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