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Sepulchral Beech

#1b4d09
Notes

Sepulchral Beech (#1B4D09) is a deep green 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 (104°, 79%, 17%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1b4d09
RGB
rgb(27, 77, 9)
HSL
hsl(104, 79%, 17%)
HWB
hwb(104 4% 70%)
OKLCH
oklch(37.2% 0.110 139.3)
P3
color(display-p3 0.1608 0.2977 0.0865)
HSV
hsv(104, 88%, 30%)
LAB
lab(28.27% -30.15 32.26)
LCH
lch(28.27% 44.15 133.06)
CMYK
cmyk(65%, 0%, 88%, 70%)

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.

Beech
noun

The genus Fagus — particularly F. sylvatica, the European beech — a deciduous tree whose smooth gray bark and golden-green spring foliage define European temperate woodland. The color refers to fresh beech foliage in May: a saturated, slightly yellow yellow-green with the satin finish of new leaf surface.

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.

#1b4d09
Original
#504500
Protanopia
#494111
Deuteranopia
#154a41
Tritanopia
#3d3d3d
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
9.94:1
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
2.11:1

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
##1B4D09
Display P3
Display P3
color(display-p3 0.1608 0.2977 0.0865)
P3 has subtle headroomOKLCH chroma 0.110

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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