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Acidic Mauritius

#64efc9
Notes

Acidic Mauritius (#64EFC9) 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 (164°, 81%, 66%) 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
#64efc9
RGB
rgb(100, 239, 201)
HSL
hsl(164, 81%, 66%)
HWB
hwb(164 39% 6%)
OKLCH
oklch(86.5% 0.133 172.2)
HSV
hsv(164, 58%, 94%)
LAB
lab(86.33% -46.66 7.14)
LCH
lch(86.33% 47.20 171.30)
CMYK
cmyk(58%, 0%, 16%, 6%)

Etymology

Acidic
adjective

Latin acidus, sour — adjectival suffix -ic, sharing root with acetic and acerbic. As a color modifier, acidic implies a saturated-and-citric-and-sour quality, the bright color of lime-zest-and-pickled-lime citrus-fruit pulp surface. Sits at the bright-and-cool end of the grid, parallel to acid and electric in usage.

Mauritius
noun

The Indian Ocean island east of Madagascar — and the saturated turquoise of Mauritian lagoon water at Le Morne and Tamarin Bay. Mauritius color refers to a Mauritian lagoon at midday: a saturated, slightly cool deep blue-green with the optical clarity of warm Indian Ocean water.

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.

#64efc9
Original
#e8e1c7
Protanopia
#d4d2cc
Deuteranopia
#00f1e4
Tritanopia
#cfcfcf
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
1.43:1
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
14.73:1

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