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Vibrantcyan

Rich Aqua Drift

#42c5e2
Notes

Rich Aqua Drift (#42C5E2) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (191°, 73%, 57%) 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
#42c5e2
RGB
rgb(66, 197, 226)
HSL
hsl(191, 73%, 57%)
HWB
hwb(191 26% 11%)
OKLCH
oklch(76.5% 0.118 215.8)
HSV
hsv(191, 71%, 89%)
LAB
lab(73.92% -26.04 -24.71)
LCH
lch(73.92% 35.89 223.50)
CMYK
cmyk(71%, 13%, 0%, 11%)

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.

#42c5e2
Original
#b1bfe4
Protanopia
#9bafe2
Deuteranopia
#00d0ce
Tritanopia
#ababab
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
2.04:1
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
10.32:1

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Canvas