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Sturdy Carmesí

#831d1a
Notes

Sturdy Carmesí (#831D1A) is a deep 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 (2°, 67%, 31%) 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
#831d1a
RGB
rgb(131, 29, 26)
HSL
hsl(2, 67%, 31%)
HWB
hwb(2 10% 49%)
OKLCH
oklch(40.3% 0.138 27.2)
HSV
hsv(2, 80%, 51%)
LAB
lab(28.85% 42.62 28.68)
LCH
lch(28.85% 51.37 33.94)
CMYK
cmyk(0%, 78%, 80%, 49%)

Etymology

Sturdy
adjective

Old French estourdi, stunned, reckless — drifted in English to mean robust, well-built. Used as a color modifier since the seventeenth century for hues that read as durable and unfussy — the working browns of saddle leather, the working greens of pasture wool. Sits in the bold-and-warm corner alongside robust and solid.

Carmesí
noun

The Spanish word for crimson — borrowed via Arabic qirmiz (the kermes scale insect) and used in the deep red textiles of medieval Castilian and Valencian silk. The color refers to a carmesí-dyed Castilian silk: a saturated, slightly cool deep red with the satin finish of plant-and-insect dye. The Spanish cousin of crimson, slightly more formal in register.

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.

#831d1a
Original
#3c3618
Protanopia
#554c16
Deuteranopia
#91001e
Tritanopia
#323232
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
9.74:1
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
2.16:1

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