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Robust Damascus

#812da3
Notes

Robust Damascus (#812DA3) is a true violet with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (283°, 57%, 41%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#812da3
RGB
rgb(129, 45, 163)
HSL
hsl(283, 57%, 41%)
HWB
hwb(283 18% 36%)
OKLCH
oklch(47.5% 0.187 314.3)
HSV
hsv(283, 72%, 64%)
LAB
lab(36.35% 53.87 -47.46)
LCH
lch(36.35% 71.79 318.62)
CMYK
cmyk(21%, 72%, 0%, 36%)

Etymology

Robust
adjective

From the Latin robustus, of oak — implying strength combined with substance. As a color modifier, robust describes saturation combined with body: a robust burgundy, a robust olive. Sits in the bold-and-warm corner alongside strong and solid, with the slightly textural implication of a color that has substance behind the pigment.

Damascus
noun

Syrian Silk Road capital — and the medieval Levantine purple-textile depot where Byzantine and Mamluk purple silks were processed and re-exported. Damascus color refers to a Damascus-style damask-weave purple silk in the Great Umayyad Mosque's treasury: a saturated, slightly cool deep violet with the silk luster of multi-bath Tyrian-and-indigo overdye on damask-weave Syrian silk.

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.

#812da3
Original
#0051a6
Protanopia
#2658a0
Deuteranopia
#7e4665
Tritanopia
#474747
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

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