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Mired Tarbuttite

#28177a
Notes

Mired Tarbuttite (#28177A) 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 (250°, 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#28177a
RGB
rgb(40, 23, 122)
HSL
hsl(250, 68%, 28%)
HWB
hwb(250 9% 52%)
OKLCH
oklch(30.8% 0.155 280.1)
P3
color(display-p3 0.1472 0.0931 0.4592)
HSV
hsv(250, 81%, 48%)
LAB
lab(17.78% 37.85 -52.81)
LCH
lch(17.78% 64.97 305.63)
CMYK
cmyk(67%, 81%, 0%, 52%)

Etymology

Mired
adjective

Old Norse mýrr, mire / bog — past-participle of mire. As a color modifier, mired implies the deep-and-stuck-and-warm-brown quality of bog-and-peat-and-marsh-mud-immersion, like a Yorkshire-Moors hiker's boots after a rainy day on the saturated peat. Sits at the deep-and-warm end of the grid, parallel to peat-stained with earthy register.

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.

#28177a
Original
#002f7d
Protanopia
#002878
Deuteranopia
#003548
Tritanopia
#222222
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
14.06:1
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
1.49:1

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
##28177A
Display P3
Display P3
color(display-p3 0.1472 0.0931 0.4592)
P3 has subtle headroomOKLCH chroma 0.155

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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