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Ostentatious Coiled Turquoise

#25e1d1
Notes

Ostentatious Coiled Turquoise (#25E1D1) 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 (175°, 76%, 51%) 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
#25e1d1
RGB
rgb(37, 225, 209)
HSL
hsl(175, 76%, 51%)
HWB
hwb(175 15% 12%)
OKLCH
oklch(82.1% 0.139 185.5)
P3
color(display-p3 0.4221 0.8696 0.8183)
HSV
hsv(175, 84%, 88%)
LAB
lab(81.20% -46.83 -4.69)
LCH
lch(81.20% 47.07 185.72)
CMYK
cmyk(84%, 0%, 7%, 12%)

Etymology

Ostentatious
adjective

Latin ostentātiōnis, display — adjectival suffix -ous, derived from ostendere (to show). As a color modifier, ostentatious implies a saturated-and-attention-demanding-and-elaborate quality, the bright color of Belle-Époque-and-Gilded-Age showy-luxury-display interior-decoration. Sits at the bright-and-flamboyant end of the grid, parallel to flamboyant and showy in usage.

Coiled
modifier

Old French coillir, to-collect. As a color modifier, coiled implies a wound-and-spiral quality, the visual register of hand-coiled-rope-and-clay hand-coiled-and-wound rope-and-clay-and-pottery hand-coiled-and-wound coil-and-spiral-and-pottery surfaces under hand-coiled-and-wound pottery-and-rope workshop-light. Sits at the modifier-and-texture end of the grid, parallel to twined and looped 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.

#25e1d1
Original
#d5d4d1
Protanopia
#bdc2d3
Deuteranopia
#00e6dc
Tritanopia
#b8b8b8
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
1.64:1
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
12.77:1

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
##25E1D1
Display P3
Display P3
color(display-p3 0.4221 0.8696 0.8183)
P3 has subtle headroomOKLCH chroma 0.139

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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