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Easy Patina

#66c1ad
Notes

Easy Patina (#66C1AD) is a true teal 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 (167°, 42%, 58%) 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
#66c1ad
RGB
rgb(102, 193, 173)
HSL
hsl(167, 42%, 58%)
HWB
hwb(167 40% 24%)
OKLCH
oklch(74.9% 0.093 177.6)
P3
color(display-p3 0.4890 0.7484 0.6810)
HSV
hsv(167, 47%, 76%)
LAB
lab(72.21% -32.08 1.67)
LCH
lch(72.21% 32.12 177.02)
CMYK
cmyk(47%, 0%, 10%, 24%)

Etymology

Easy
adjective

Old French aisié, comfortable, at rest — used as a color modifier since the eighteenth century for hues that read as visually undemanding. Easy beige, easy gray: moderate saturation combined with optical restfulness. Sits at the crisp-bucket center alongside calm and settled.

Patina
noun

The thin corrosion layer that develops on copper, bronze, and other metals over time — sometimes copper carbonate (verdigris), sometimes copper sulfate, depending on environment. The color refers to mature exposed-bronze patina on a public statue: a soft, slightly muted blue-green with the powdery finish of mineral oxide. Drabber than verdigris, cooler than celadon, with the slow-time weight of a surface that records its age.

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.

#66c1ad
Original
#bbb7ac
Protanopia
#acadaf
Deuteranopia
#40c3bb
Tritanopia
#acacac
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
2.14:1
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
9.80:1

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
##66C1AD
Display P3
Display P3
color(display-p3 0.4890 0.7484 0.6810)
P3 has subtle headroomOKLCH chroma 0.093

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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