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Cool Jade Opal

#12c9ad
Notes

Cool Jade Opal (#12C9AD) is a true teal with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (171°, 84%, 43%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#12c9ad
RGB
rgb(18, 201, 173)
HSL
hsl(171, 84%, 43%)
HWB
hwb(171 7% 21%)
OKLCH
oklch(74.9% 0.136 177.7)
HSV
hsv(171, 91%, 79%)
LAB
lab(72.84% -47.57 2.35)
LCH
lch(72.84% 47.63 177.17)
CMYK
cmyk(91%, 0%, 14%, 21%)

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.

#12c9ad
Original
#c0bcac
Protanopia
#abacaf
Deuteranopia
#00ccc1
Tritanopia
#a0a0a0
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
2.10:1
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
9.98:1

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