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Saturnine Sequoia

#15390d
Notes

Saturnine Sequoia (#15390D) 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 (109°, 63%, 14%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#15390d
RGB
rgb(21, 57, 13)
HSL
hsl(109, 63%, 14%)
HWB
hwb(109 5% 78%)
OKLCH
oklch(30.7% 0.082 140.3)
P3
color(display-p3 0.1201 0.2204 0.0765)
HSV
hsv(109, 77%, 22%)
LAB
lab(20.50% -22.94 22.69)
LCH
lch(20.50% 32.26 135.32)
CMYK
cmyk(63%, 0%, 77%, 78%)

Etymology

Saturnine
adjective

Latin Sāturnīnus, of Saturn — referring to the gloomy temperament associated with the planet Saturn in classical-and-Renaissance astrology. As a color modifier, saturnine implies a deep-and-cool-and-gloomy quality, the dark cool-gray of Hellebore-and-Lead alchemical-melancholic associations. Sits at the deep-and-cool end of the grid, parallel to sullen and gloomy.

Sequoia
noun

Sequoiadendron giganteum, the giant sequoia of the Sierra Nevada — the largest living tree species on Earth by volume. Sequoia color refers to mature sequoia needle foliage: a deep, slightly cool dark green with the matte finish of scale-leaf conifer foliage.

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.

#15390d
Original
#3b3307
Protanopia
#363011
Deuteranopia
#113730
Tritanopia
#2e2e2e
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
12.94:1
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
1.62:1

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
##15390D
Display P3
Display P3
color(display-p3 0.1201 0.2204 0.0765)
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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