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Reliable Wraith Verdigris

#37bbbb
Notes

Reliable Wraith Verdigris (#37BBBB) is a true cyan 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 (180°, 55%, 47%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#37bbbb
RGB
rgb(55, 187, 187)
HSL
hsl(180, 55%, 47%)
HWB
hwb(180 22% 27%)
OKLCH
oklch(72.4% 0.110 195.0)
HSV
hsv(180, 71%, 73%)
LAB
lab(69.42% -34.29 -10.26)
LCH
lch(69.42% 35.79 196.66)
CMYK
cmyk(71%, 0%, 0%, 27%)

Etymology

Reliable
adjective

Latin re-ligāre, to bind back — adjectival suffix -able. As a color modifier, reliable implies a clear-and-trustworthy-and-consistent quality where the hue carries the visual register of dependable-and-consistent design-element. Sits at the crisp-and-honest end of the grid, parallel to dependable and trustworthy in usage.

Wraith
modifier

Scots wraith, ghost-or-apparition. As a color modifier, wraith implies a ghostly-and-pale-and-apparitional quality, the visual register of Highland-Scots-and-Border-Ballad-wraith hand-ghostly-and-pale-and-apparitional Highland-Scots-and-Border-Ballad-and-Hebridean wraith-and-ghostly-and-pale surfaces under Highland-Scots-and-Border-Ballad-and-Hebridean moonlit-and-mist-shrouded-and-pale graveyard-and-tarn-light. Sits at the modifier-and-mood end of the grid, parallel to pall and gloam in usage.

Verdigris
noun

The basic copper carbonate that forms on weathered copper and bronze — the pigment scraped from oxidized metal and used in Renaissance painting before being supplanted by more stable greens. The color refers to a thick verdigris on aged copper roofing or the Statue of Liberty's surface: a soft, slightly muted blue-green with the powdery finish of mineral oxide. Cooler than patina, warmer than seafoam, with the archaeological weight of a mineral made by time.

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

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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.

#37bbbb
Original
#afb2bb
Protanopia
#9ba3bc
Deuteranopia
#00c1bb
Tritanopia
#9f9f9f
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).
Failon White
2.34:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
8.99:1

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