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Caliginous Jaipur

#371f81
Notes

Caliginous Jaipur (#371F81) 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 (255°, 61%, 31%) 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
#371f81
RGB
rgb(55, 31, 129)
HSL
hsl(255, 61%, 31%)
HWB
hwb(255 12% 49%)
OKLCH
oklch(34.0% 0.153 286.2)
P3
color(display-p3 0.2024 0.1259 0.4862)
HSV
hsv(255, 76%, 51%)
LAB
lab(21.49% 37.77 -51.09)
LCH
lch(21.49% 63.54 306.48)
CMYK
cmyk(57%, 76%, 0%, 49%)

Etymology

Caliginous
adjective

Latin cālīginōsus, misty / dark — derived from cālīgō (mist, gloom). As a color modifier, caliginous implies an obscured, dimmed, slightly-cool-shifted quality where the hue is veiled by darkness or atmospheric fog. Sits at the deep-and-veiled end of the grid, between murky and tenebrous in usage.

Jaipur
noun

The Indian Pink City of Rajasthan, capital of the former Jaipur State of the Rajputana — historical depot for the lapis lazuli trade between Afghanistan and the courts of Hindustan, and home of Sanganeri indigo block-printing. Jaipur color refers to a Sanganeri-block-printed muslin: a saturated, slightly cool deep blue-violet with the matte finish of multi-bath fermentation indigo on hand-printed cotton.

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.

#371f81
Original
#003684
Protanopia
#00317f
Deuteranopia
#153a4e
Tritanopia
#2b2b2b
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
12.53:1
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
1.68:1

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
##371F81
Display P3
Display P3
color(display-p3 0.2024 0.1259 0.4862)
P3 has subtle headroomOKLCH chroma 0.153

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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