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Rugged Suo

#890f68
Notes

Rugged Suo (#890F68) is a deep magenta 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 (316°, 80%, 30%) places it in the highly saturated band at a dark 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#890f68
RGB
rgb(137, 15, 104)
HSL
hsl(316, 80%, 30%)
HWB
hwb(316 6% 46%)
OKLCH
oklch(42.9% 0.174 342.8)
HSV
hsv(316, 89%, 54%)
LAB
lab(31.02% 54.84 -19.14)
LCH
lch(31.02% 58.09 340.77)
CMYK
cmyk(0%, 89%, 24%, 46%)

Etymology

Rugged
adjective

Old Norse rugga, rough / coarse — adjectival suffix -ed. As a color modifier, rugged implies a saturated-and-rough-and-weathered quality, the deep-rich color of Scottish-Highlands-and-Norwegian-fjord outdoor-and-mountain landscape. Sits at the bold-and-weathered end of the grid, parallel to tough and sinewy in usage.

Suo
noun

Japanese 蘇芳, sappan-wood dye (Caesalpinia sappan) — derived from a Southeast Asian tree's heartwood, imported to Japan since the Nara period (710–794) for dyeing court robes a deep red-purple. Suo color refers to a suo-dyed Heian-period silk kinu: a saturated, slightly cool deep magenta with the silk luster of multi-bath sappan-wood dye on tussah silk. Distinct from akane (madder) and beni (safflower).

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.

#890f68
Original
#203d6a
Protanopia
#485065
Deuteranopia
#92103d
Tritanopia
#2f2f2f
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
9.01:1
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
2.33:1

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