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Smoky Indore

#3f1b71
Notes

Smoky Indore (#3F1B71) 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 (265°, 61%, 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
#3f1b71
RGB
rgb(63, 27, 113)
HSL
hsl(265, 61%, 27%)
HWB
hwb(265 11% 56%)
OKLCH
oklch(32.8% 0.138 297.2)
HSV
hsv(265, 76%, 44%)
LAB
lab(20.17% 36.55 -42.99)
LCH
lch(20.17% 56.43 310.37)
CMYK
cmyk(44%, 76%, 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.

Indore
noun

Indian princely-state capital (now Madhya Pradesh's largest city) — once an important node on the colonial-era indigo trade routes, with the Holkar royal silks dyed in Bengal-sourced Indigofera tinctoria. Indore color refers to an Indore-made Holkar-court kanjivaram silk: a saturated, slightly cool deep blue-violet with the silk luster of multi-bath natural indigo on heavy zari brocade.

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.

#3f1b71
Original
#003173
Protanopia
#00306f
Deuteranopia
#323144
Tritanopia
#292929
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
13.07:1
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
1.61:1

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