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Hygienic Buffed Verdigris

#28a8a3
Notes

Hygienic Buffed Verdigris (#28A8A3) is a true cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (178°, 62%, 41%) 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
#28a8a3
RGB
rgb(40, 168, 163)
HSL
hsl(178, 62%, 41%)
HWB
hwb(178 16% 34%)
OKLCH
oklch(66.5% 0.106 190.9)
P3
color(display-p3 0.3264 0.6494 0.6360)
HSV
hsv(178, 76%, 66%)
LAB
lab(62.59% -34.17 -7.16)
LCH
lch(62.59% 34.91 191.83)
CMYK
cmyk(76%, 0%, 3%, 34%)

Etymology

Hygienic
adjective

Greek hygieinós, healthful — derived from Hygieia (goddess of health). As a color modifier, hygienic implies a clear-and-medical-clean quality, the crisp color of Mid-Century-Modern clinical-and-hospital interior-architecture surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and sterile in usage.

Buffed
modifier

Old French buffer, to-puff. As a color modifier, buffed implies a polished-and-shined quality, the visual register of Sheffield-and-Renaissance-buffed-and-polished hand-buffed-and-polished metal-and-leather-and-wood Sheffield-and-Renaissance-buffed-and-polished surfaces under Sheffield-and-Renaissance hand-buffed-and-polished workshop-light. Sits at the modifier-and-texture end of the grid, parallel to honed and gloss 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.

#28a8a3
Original
#9e9fa3
Protanopia
#8c92a4
Deuteranopia
#00ada6
Tritanopia
#8c8c8c
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
2.91:1
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
7.22:1

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
##28A8A3
Display P3
Display P3
color(display-p3 0.3264 0.6494 0.6360)
P3 has subtle headroomOKLCH chroma 0.106

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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