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Plush Tarbuttite

#3a1778
Notes

Plush Tarbuttite (#3A1778) 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 (262°, 68%, 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
#3a1778
RGB
rgb(58, 23, 120)
HSL
hsl(262, 68%, 28%)
HWB
hwb(262 9% 53%)
OKLCH
oklch(32.4% 0.151 292.1)
P3
color(display-p3 0.2100 0.0978 0.4521)
HSV
hsv(262, 81%, 47%)
LAB
lab(19.51% 39.64 -48.61)
LCH
lch(19.51% 62.73 309.20)
CMYK
cmyk(52%, 81%, 0%, 53%)

Etymology

Plush
adjective

From the French peluche, long-haired fabric — borrowed into English in the seventeenth century for the deep-pile velvet imitation that became Victorian upholstery. As a color modifier, plush implies the optical depth that comes from a thick pile absorbing light: plush burgundy, plush emerald. Sits in the dark-and-saturated quadrant near velvet and deep.

Tarbuttite
noun

Rare zinc-phosphate mineral first described from the Broken Hill lead-zinc deposits of Zambia in 1907, also found at Reaphook Hill in South Australia. Tarbuttite color refers to a deep-violet Broken Hill tarbuttite crystal cluster: a saturated, slightly cool deep blue-violet with the glassy finish of zinc-phosphate mineral. Named for Percy Coventry Tarbutt, an early-20th-century mining-company director.

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.

#3a1778
Original
#00317b
Protanopia
#002d76
Deuteranopia
#253247
Tritanopia
#252525
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
13.34:1
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
1.57:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##3A1778
Display P3
Display P3
color(display-p3 0.2100 0.0978 0.4521)
P3 has subtle headroomOKLCH chroma 0.151

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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