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Untroubled Corsica

#378b4e
Notes

Untroubled Corsica (#378B4E) is a true green 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 (136°, 43%, 38%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#378b4e
RGB
rgb(55, 139, 78)
HSL
hsl(136, 43%, 38%)
HWB
hwb(136 22% 45%)
OKLCH
oklch(57.0% 0.124 149.7)
P3
color(display-p3 0.3080 0.5380 0.3295)
HSV
hsv(136, 60%, 55%)
LAB
lab(51.64% -39.46 25.22)
LCH
lch(51.64% 46.83 147.41)
CMYK
cmyk(60%, 0%, 44%, 45%)

Etymology

Untroubled
adjective

Latin turbāre, to disturb — negative-prefix un- plus past-participle of trouble. As a color modifier, untroubled implies a clear-and-calm-and-undisturbed quality where the hue carries no visual agitation. Sits at the crisp-and-calm end of the grid, parallel to serene and placid in usage.

Corsica
noun

The French Mediterranean island — and the saturated blue-green of Corsican calanques (rocky coves) at Calanche de Piana and Bonifacio. Corsica refers to a Bonifacio cove at midday: a saturated, slightly cool deep blue-green with the optical clarity of cold Tyrrhenian Sea water.

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.

#378b4e
Original
#8c804a
Protanopia
#817852
Deuteranopia
#20897c
Tritanopia
#757575
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).
AA Largeon White
4.23:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.97:1

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
##378B4E
Display P3
Display P3
color(display-p3 0.3080 0.5380 0.3295)
P3 has subtle headroomOKLCH chroma 0.124

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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