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Imposing Carthage

#531974
Notes

Imposing Carthage (#531974) is a deep indigo 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 (278°, 65%, 28%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#531974
RGB
rgb(83, 25, 116)
HSL
hsl(278, 65%, 28%)
HWB
hwb(278 10% 55%)
OKLCH
oklch(35.5% 0.148 309.8)
HSV
hsv(278, 78%, 45%)
LAB
lab(22.98% 42.22 -40.23)
LCH
lch(22.98% 58.31 316.38)
CMYK
cmyk(28%, 78%, 0%, 55%)

Etymology

Imposing
adjective

Latin impōnere, to place upon — present-participle of impose. As a color modifier, imposing implies a deep-and-massive-and-architectural quality, the dark cool-gray of Citadel-and-Cathedral monumental architecture against the sky. Sits at the deep-and-architectural end of the grid, parallel to towering and looming in scale.

Carthage
noun

Phoenician colonial capital on the Tunis coast (founded 814 BCE) — and a major secondary Tyrian purple production site supplying the western Mediterranean trade network. Carthage color refers to a Carthaginian trade-textile fragment from the Byrsa hill citadel: a saturated, slightly cool deep violet with the matte finish of multi-bath Bolinus brandaris shellfish dye on hand-loomed Punic wool.

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.

#531974
Original
#003477
Protanopia
#013872
Deuteranopia
#4e2f45
Tritanopia
#2c2c2c
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
11.94:1
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
1.76:1

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