colors
Back to gallery

Radiant Gust Turquoise

#19ddd6
Notes

Radiant Gust Turquoise (#19DDD6) 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 (178°, 80%, 48%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#19ddd6
RGB
rgb(25, 221, 214)
HSL
hsl(178, 80%, 48%)
HWB
hwb(178 10% 13%)
OKLCH
oklch(81.2% 0.137 190.7)
P3
color(display-p3 0.4050 0.8540 0.8350)
HSV
hsv(178, 89%, 87%)
LAB
lab(80.05% -44.41 -9.07)
LCH
lch(80.05% 45.33 191.55)
CMYK
cmyk(89%, 0%, 3%, 13%)

Etymology

Radiant
adjective

From the Latin radiare, to emit rays — used as a color word since the seventeenth century for hues that read as luminous and emitting. Radiant gold, radiant pink: the implication is high luminance combined with the optical impression of an outward light. Sits in the bright-bucket center alongside glowing.

Gust
modifier

Old Norse gustr, sudden-burst-of-wind. As a color modifier, gust implies a sudden-burst-and-cliff-top-and-driven quality, the visual register of Cornish-cliff-and-Hebridean-gust hand-sudden-burst-and-cliff-top-and-driven Cornish-cliff-and-Hebridean-gust-and-North-Atlantic-front gust-and-sudden-burst-and-cliff-top surfaces under Cornish-cliff-and-Hebridean-gust-and-North-Atlantic-front Lizard-Point-and-Outer-Hebrides-and-Faroe-passage cliff-top-wind-light. Sits at the modifier-and-weather end of the grid, parallel to zephyr and mistral in usage.

Turquoise
noun

The hydrated copper-aluminum phosphate mined in Persia and the American Southwest for thousands of years — the firuze of Iran, the chalchihuitl of Mesoamerica, the heart of Pueblo and Navajo silverwork. The color refers to a fine Sleeping Beauty turquoise from Arizona: a saturated, slightly green-shifted blue with the slight matrix of host-rock veining. Brighter than persian, lighter than cerulean.

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.

#19ddd6
Original
#cfd1d6
Protanopia
#b7bfd7
Deuteranopia
#00e3da
Tritanopia
#b3b3b3
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
1.70:1
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
12.35:1

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
##19DDD6
Display P3
Display P3
color(display-p3 0.4050 0.8540 0.8350)
P3 has subtle headroomOKLCH chroma 0.137

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.

Related Colors

Canvas