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Truthful Tin Verdigris

#42b5b7
Notes

Truthful Tin Verdigris (#42B5B7) 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 (181°, 47%, 49%) 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
#42b5b7
RGB
rgb(66, 181, 183)
HSL
hsl(181, 47%, 49%)
HWB
hwb(181 26% 28%)
OKLCH
oklch(71.0% 0.101 196.8)
HSV
hsv(181, 64%, 72%)
LAB
lab(67.74% -31.00 -10.55)
LCH
lch(67.74% 32.74 198.79)
CMYK
cmyk(64%, 1%, 0%, 28%)

Etymology

Truthful
adjective

Old English trēowth, truth — adjectival suffix -ful. As a color modifier, truthful implies a clear-and-honest-and-direct quality where the hue carries the visual register of accurate-and-faithful-representation declaration. Sits at the crisp-and-honest end of the grid, parallel to candid and honest in usage.

Tin
modifier

Old English tin, tin. As a color modifier, tin implies a soft-malleable-metal quality, the visual register of Cornish-and-Indonesian-tin-mining hand-cast-and-rolled tin-mining-and-tin-vessel-and-tin-toy soft-malleable-metal surfaces under hand-cast-and-rolled-tin workshop-light. Sits at the modifier-and-texture end of the grid, parallel to gold and foil 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

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.

#42b5b7
Original
#a9adb7
Protanopia
#979fb8
Deuteranopia
#00bbb5
Tritanopia
#9d9d9d
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
2.46:1
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
8.52:1

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