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Buried Steller

#15378a
Notes

Buried Steller (#15378A) is a deep azure 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 (223°, 74%, 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#15378a
RGB
rgb(21, 55, 138)
HSL
hsl(223, 74%, 31%)
HWB
hwb(223 8% 46%)
OKLCH
oklch(36.9% 0.144 263.8)
P3
color(display-p3 0.1175 0.2127 0.5213)
HSV
hsv(223, 85%, 54%)
LAB
lab(25.94% 21.16 -49.54)
LCH
lch(25.94% 53.87 293.13)
CMYK
cmyk(85%, 60%, 0%, 46%)

Etymology

Buried
adjective

Old English byrgan, to inter — past-participle of bury. As a color modifier, buried implies the deep-shrouded darkness of a sealed-and-covered hue, where surface qualities are obscured by intervening material. Sits at the deep-and-obscured end of the grid, parallel to cloaked and entombed.

Steller
noun

Cyanocitta stelleri, the Steller's jay — named for German naturalist Georg Wilhelm Steller, who collected the type specimen on the 1741 Bering Expedition. The males display saturated deep-blue plumage with black crests. The color refers to a male Steller's jay in fresh plumage: a saturated, slightly cool deep blue with the matte finish of structurally-colored corvid feathers.

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.

#15378a
Original
#00438d
Protanopia
#003888
Deuteranopia
#004c5b
Tritanopia
#363636
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
10.79:1
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
1.95:1

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
##15378A
Display P3
Display P3
color(display-p3 0.1175 0.2127 0.5213)
P3 has subtle headroomOKLCH chroma 0.144

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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