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Manic Atoll

#28e1c5
Notes

Manic Atoll (#28E1C5) 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°, 76%, 52%) 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
#28e1c5
RGB
rgb(40, 225, 197)
HSL
hsl(171, 76%, 52%)
HWB
hwb(171 16% 12%)
OKLCH
oklch(81.8% 0.143 179.0)
HSV
hsv(171, 82%, 88%)
LAB
lab(80.92% -49.83 1.27)
LCH
lch(80.92% 49.85 178.54)
CMYK
cmyk(82%, 0%, 12%, 12%)

Etymology

Manic
adjective

Greek manikós, raving / mad — sharing root with mania. As a color modifier, manic implies a saturated-and-overstimulated-and-extreme quality, the bright color of Andy-Warhol-and-Pop-Art late-Pop-Art repeated-and-multiplied portrait color schemes. Sits at the bright-and-active end of the grid, parallel to hyper and frenetic in usage.

Atoll
noun

A ring-shaped coral reef enclosing a central lagoon — the geological signature of subsiding volcanic islands ringed by upward-growing coral. Atoll color refers to the unifying blue-green of a Maldivian-style atoll lagoon seen from above: a saturated, slightly cool deep blue-green with the optical clarity of shallow tropical 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.

#28e1c5
Original
#d7d3c4
Protanopia
#c0c2c7
Deuteranopia
#00e5d9
Tritanopia
#b8b8b8
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
1.66:1
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
12.67:1

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