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Sepulchral Castile

#603f20
Notes

Sepulchral Castile (#603F20) is a deep orange with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (29°, 50%, 25%) 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 azure. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#603f20
RGB
rgb(96, 63, 32)
HSL
hsl(29, 50%, 25%)
HWB
hwb(29 13% 62%)
OKLCH
oklch(39.9% 0.065 62.4)
P3
color(display-p3 0.3575 0.2526 0.1462)
HSV
hsv(29, 67%, 38%)
LAB
lab(29.78% 10.88 24.53)
LCH
lch(29.78% 26.83 66.09)
CMYK
cmyk(0%, 34%, 67%, 62%)

Etymology

Sepulchral
adjective

Latin sepulcrālis, of the burial-place — adjectival form of sepulcrum. As a color modifier, sepulchral implies the deep funereal-and-formal darkness of Holy-Sepulchre-and-rock-cut royal-tomb interiors of medieval-and-Renaissance Christendom. Sits at the deep-and-funereal end of the grid, parallel to entombed and funereal in tone, both literary and architectural.

Castile
noun

The arid central plateau of Spain — and the warm tan of Castilian sandstone and the wheat fields of La Mancha. The color refers to a Castilian meseta in late summer: a soft, slightly muted warm tan-yellow with the matte finish of dry wheat-and-soil landscape. Drier than honey.

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.

#603f20
Original
#49421d
Protanopia
#514920
Deuteranopia
#693838
Tritanopia
#444444
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
9.42:1
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
2.23:1

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
##603F20
Display P3
Display P3
color(display-p3 0.3575 0.2526 0.1462)
Inside sRGBOKLCH chroma 0.065

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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