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Settled Curaçao

#21c7d3
Notes

Settled Curaçao (#21C7D3) 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 (184°, 73%, 48%) 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
#21c7d3
RGB
rgb(33, 199, 211)
HSL
hsl(184, 73%, 48%)
HWB
hwb(184 13% 17%)
OKLCH
oklch(75.8% 0.124 202.8)
P3
color(display-p3 0.3717 0.7690 0.8180)
HSV
hsv(184, 84%, 83%)
LAB
lab(73.46% -34.88 -17.33)
LCH
lch(73.46% 38.95 206.42)
CMYK
cmyk(84%, 6%, 0%, 17%)

Etymology

Settled
adjective

The past participle of settle, to come to rest — used as a color modifier since the seventeenth century for hues that read as stabilized after a process. Settled green, settled brown: moderate saturation combined with optical permanence. Sits at the crisp-bucket alongside steady and composed.

Curaçao
noun

The Caribbean liqueur made from the dried peel of the Citrus aurantium currassuviensis (Laraha orange) — produced on the Dutch Caribbean island of Curaçao since 1896. Blue Curaçao refers to the artificially-colored bright blue variant: a saturated, slightly cool electric blue with the optical clarity of citrus liqueur.

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

Click any swatch to explore

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.

#21c7d3
Original
#b6bed4
Protanopia
#9fadd4
Deuteranopia
#00cfca
Tritanopia
#a5a5a5
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
2.06:1
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
10.17:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##21C7D3
Display P3
Display P3
color(display-p3 0.3717 0.7690 0.8180)
P3 has subtle headroomOKLCH chroma 0.124

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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