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Coolcyan

Dusky Aqua Marble

#4bc9bf
Notes

Dusky Aqua Marble (#4BC9BF) is a true cyan 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 (175°, 54%, 54%) 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
#4bc9bf
RGB
rgb(75, 201, 191)
HSL
hsl(175, 54%, 54%)
HWB
hwb(175 29% 21%)
OKLCH
oklch(76.4% 0.111 187.7)
HSV
hsv(175, 63%, 79%)
LAB
lab(74.21% -36.74 -5.29)
LCH
lch(74.21% 37.11 188.19)
CMYK
cmyk(63%, 0%, 5%, 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.

#4bc9bf
Original
#bfbfbf
Protanopia
#abb1c0
Deuteranopia
#00cec6
Tritanopia
#adadad
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
2.02:1
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
10.41:1

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Canvas