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Pale Sepulchre

#150a37
Notes

Pale Sepulchre (#150A37) 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°, 69%, 13%) 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
#150a37
RGB
rgb(21, 10, 55)
HSL
hsl(255, 69%, 13%)
HWB
hwb(255 4% 78%)
OKLCH
oklch(19.6% 0.082 287.4)
P3
color(display-p3 0.0761 0.0411 0.2064)
HSV
hsv(255, 82%, 22%)
LAB
lab(5.89% 18.98 -26.93)
LCH
lch(5.89% 32.94 305.18)
CMYK
cmyk(62%, 82%, 0%, 78%)

Etymology

Pale
adjective

From the Latin pallidus, pale, wan — used as a color modifier since the medieval period for hues that read as low-saturation and high-light. Pale pink, pale yellow: low saturation combined with high lightness. Sits at the pale-bucket center alongside light and soft.

Sepulchre
noun

Latin sepulcrum, burial-place — the deep-cool-gray hewn-rock or hand-built tomb-architecture of Holy-Sepulchre-and-rock-cut royal-burial traditions. Sepulchre color refers to a Jerusalem-Holy-Sepulchre-Aedicule face in candlelight in the Anastasis-Rotunda: a dark cool-gray with the matte finish of Galilean-and-Judean-limestone hand-quarried 4th-century Constantinian-Imperial-period rock-cut tomb-aedicule.

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.

#150a37
Original
#001438
Protanopia
#001236
Deuteranopia
#08161f
Tritanopia
#101010
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
18.58:1
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
1.13:1

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
##150A37
Display P3
Display P3
color(display-p3 0.0761 0.0411 0.2064)
P3 has subtle headroomOKLCH chroma 0.082

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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