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Utilitarian Aurora

#903a22
Notes

Utilitarian Aurora (#903A22) is a true red 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 (13°, 62%, 35%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#903a22
RGB
rgb(144, 58, 34)
HSL
hsl(13, 62%, 35%)
HWB
hwb(13 13% 44%)
OKLCH
oklch(46.3% 0.123 36.3)
HSV
hsv(13, 76%, 56%)
LAB
lab(36.12% 34.94 32.55)
LCH
lch(36.12% 47.75 42.97)
CMYK
cmyk(0%, 60%, 76%, 44%)

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.

Aurora
noun

The atmospheric phenomenon of charged particles colliding with the upper atmosphere — particularly the aurora borealis (northern lights) at high latitudes. While auroras span green and violet, the warm-orange variant occurs when particles collide with high-altitude atomic nitrogen. The color refers to an orange auroral curtain: a soft, slightly red orange with the optical translucency of upper-atmosphere emission.

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.

#903a22
Original
#52491f
Protanopia
#675c1f
Deuteranopia
#9e2735
Tritanopia
#4b4b4b
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
7.46:1
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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