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Authoritative Cairngorm

#b5640b
Notes

Authoritative Cairngorm (#B5640B) 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 (31°, 89%, 38%) 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
#b5640b
RGB
rgb(181, 100, 11)
HSL
hsl(31, 89%, 38%)
HWB
hwb(31 4% 29%)
OKLCH
oklch(58.5% 0.135 58.8)
P3
color(display-p3 0.6672 0.4080 0.1524)
HSV
hsv(31, 94%, 71%)
LAB
lab(50.65% 27.33 56.37)
LCH
lch(50.65% 62.64 64.13)
CMYK
cmyk(0%, 45%, 94%, 29%)

Etymology

Authoritative
adjective

Latin auctōritāt-, authority — adjectival suffix -ive. As a color modifier, authoritative implies a saturated-and-formal-imperative quality where the hue carries decisional weight and institutional credibility. Sits at the bold-and-authoritative end of the grid, parallel to commanding and magisterial in usage.

Cairngorm
noun

The smoky-yellow variety of quartz — named for the Cairngorm Mountains of the Scottish Highlands where it has been mined for traditional Scottish jewelry since the medieval period. The color refers to a polished Cairngorm cabochon: a soft, slightly muted warm gold-brown with the slight haze of smoky-quartz inclusions.

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.

#b5640b
Original
#7d6d00
Protanopia
#90800b
Deuteranopia
#c75155
Tritanopia
#6f6f6f
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).
AA Largeon White
4.38:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.79:1

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
##B5640B
Display P3
Display P3
color(display-p3 0.6672 0.4080 0.1524)
P3 has subtle headroomOKLCH chroma 0.135

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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