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Inflamed Caribbean

#21c2fd
Notes

Inflamed Caribbean (#21C2FD) is a true cyan with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (196°, 98%, 56%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#21c2fd
RGB
rgb(33, 194, 253)
HSL
hsl(196, 98%, 56%)
HWB
hwb(196 13% 1%)
OKLCH
oklch(76.4% 0.147 230.1)
HSV
hsv(196, 87%, 99%)
LAB
lab(73.54% -18.78 -39.90)
LCH
lch(73.54% 44.09 244.80)
CMYK
cmyk(87%, 23%, 0%, 1%)

Etymology

Inflamed
adjective

Latin inflammātus, set on fire — past-participle of inflame. As a color modifier, inflamed implies a saturated-and-irritated-hot quality, the bright color of sun-burnt-skin and autumn-leaf high-anthocyanin pigmentation. Sits at the bright-and-warm end of the grid, parallel to fiery and flaming in usage.

Caribbean
noun

The Caribbean Sea — the tropical basin between the Gulf of Mexico and the Atlantic, ringed by Cuba, Hispaniola, the Lesser Antilles, and the Central American mainland. The color refers to mid-depth Caribbean water on a sunny day: a saturated, slightly muted blue-green with the optical complexity of pure water filtered through coral sand. Cooler than turquoise, warmer than azure, with the postcard weight of a sea named for its indigenous people.

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.

#21c2fd
Original
#a4bfff
Protanopia
#88acfc
Deuteranopia
#00d2d6
Tritanopia
#a4a4a4
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
10.20:1

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