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Cool Tahiti

#42d4ba
Notes

Cool Tahiti (#42D4BA) 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 (169°, 63%, 55%) 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
#42d4ba
RGB
rgb(66, 212, 186)
HSL
hsl(169, 63%, 55%)
HWB
hwb(169 26% 17%)
OKLCH
oklch(78.7% 0.128 178.3)
HSV
hsv(169, 69%, 83%)
LAB
lab(77.15% -44.34 1.70)
LCH
lch(77.15% 44.37 177.80)
CMYK
cmyk(69%, 0%, 12%, 17%)

Etymology

Cool
adjective

Old English cōl, of low temperature — used as a color modifier as the complement to warm. Cool gray, cool blue: the optical impression of a slight blue-green shift, even within otherwise warm or neutral hues. Sits across the crisp, hushed, pale, and neutral buckets.

Tahiti
noun

The largest island of French Polynesia — and the saturated blue-green of Tahitian lagoons surrounded by coral reef. Tahiti color refers to a Tahitian lagoon at midday: a saturated, slightly cool deep blue-green with the optical clarity of shallow tropical water over white coral sand.

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.

#42d4ba
Original
#ccc7b9
Protanopia
#b7b8bc
Deuteranopia
#00d7cc
Tritanopia
#b3b3b3
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
1.85:1
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
11.36:1

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