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Bright Sardinia

#21cfbf
Notes

Bright Sardinia (#21CFBF) 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 (174°, 73%, 47%) 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
#21cfbf
RGB
rgb(33, 207, 191)
HSL
hsl(174, 73%, 47%)
HWB
hwb(174 13% 19%)
OKLCH
oklch(77.1% 0.131 184.8)
HSV
hsv(174, 84%, 81%)
LAB
lab(75.27% -44.34 -3.81)
LCH
lch(75.27% 44.50 184.91)
CMYK
cmyk(84%, 0%, 8%, 19%)

Etymology

Bright
adjective

Old English beorht, shining, luminous — cognate with the German Bracht, splendor. Applied to color since at least the medieval period for hues that read as luminous: not just light in value but optically active, as if scattering more light back than a dimmer color of the same lightness would. Sits at the bright-bucket center alongside vivid and brilliant.

Sardinia
noun

The Italian Mediterranean island — and the saturated turquoise of Sardinian Costa Smeralda (Emerald Coast) at Cala di Volpe and Spiaggia del Principe. Sardinia refers to a Costa Smeralda lagoon: a saturated, slightly cool deep blue-green with the optical clarity of cold Mediterranean 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.

#21cfbf
Original
#c4c3bf
Protanopia
#aeb3c1
Deuteranopia
#00d4ca
Tritanopia
#a9a9a9
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
1.95:1
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
10.74:1

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