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Smoky Sugilite

#481a71
Notes

Smoky Sugilite (#481A71) 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 (272°, 63%, 27%) 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
#481a71
RGB
rgb(72, 26, 113)
HSL
hsl(272, 63%, 27%)
HWB
hwb(272 10% 56%)
OKLCH
oklch(33.8% 0.141 303.7)
HSV
hsv(272, 77%, 44%)
LAB
lab(21.24% 38.81 -41.20)
LCH
lch(21.24% 56.60 313.29)
CMYK
cmyk(36%, 77%, 0%, 56%)

Etymology

Smoky
adjective

An adjectival form of smoke, used as a color word since at least the fourteenth century. Smoky implies a slightly muted, slightly hazed quality — as if the color were seen through a layer of suspended particulate. Used across both deep and neutral buckets: a smoky black has slightly less density than pure black; a smoky gray has slightly less coolness than pure gray.

Sugilite
noun

A manganese-bearing cyclosilicate gem first described in 1944, with major sources in South Africa's Wessels Mine. The color refers to a polished sugilite cabochon: a saturated, slightly red-shifted deep purple with the matte finish of opaque mineral. Cooler than amethyst, warmer than tanzanite, with the gem-trade rarity of a stone produced commercially from one principal mine and priced accordingly.

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.

#481a71
Original
#003273
Protanopia
#00336f
Deuteranopia
#402f44
Tritanopia
#2a2a2a
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
12.64:1
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
1.66:1

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