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Buzzing Rigel Turquoise

#25d5cc
Notes

Buzzing Rigel Turquoise (#25D5CC) 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 (177°, 70%, 49%) 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
#25d5cc
RGB
rgb(37, 213, 204)
HSL
hsl(177, 70%, 49%)
HWB
hwb(177 15% 16%)
OKLCH
oklch(79.0% 0.131 189.3)
P3
color(display-p3 0.4007 0.8232 0.7967)
HSV
hsv(177, 83%, 84%)
LAB
lab(77.48% -43.02 -7.53)
LCH
lch(77.48% 43.68 189.92)
CMYK
cmyk(83%, 0%, 4%, 16%)

Etymology

Buzzing
adjective

The progressive participle of buzz — borrowed metaphorically as a color word since the late twentieth century for hues that read as visually loud and slightly destabilizing. Buzzing yellow, buzzing magenta: the implication is saturation pushed past comfortable into the realm of optical agitation. Sits at the bright-bucket extreme alongside electric.

Rigel
modifier

Arabic rijl-al-jawzā', foot-of-Orion. As a color modifier, rigel implies a blue-supergiant-and-Orion-foot quality, the visual register of Orion-Hunter-and-winter-blue-supergiant-Rigel hand-blue-supergiant-and-Orion-foot Orion-Hunter-and-winter-blue-supergiant-and-Bortle-1 rigel-and-blue-supergiant-and-winter-zenith surfaces under Orion-Hunter-and-winter-blue-supergiant-and-Bortle-1 January-and-February-winter-Orion deep-blue-stellar-light. Sits at the modifier-and-cosmic end of the grid, parallel to vega and deneb 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.

#25d5cc
Original
#c8c9cc
Protanopia
#b1b8cd
Deuteranopia
#00dbd2
Tritanopia
#afafaf
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
1.83:1
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
11.47:1

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
##25D5CC
Display P3
Display P3
color(display-p3 0.4007 0.8232 0.7967)
P3 has subtle headroomOKLCH chroma 0.131

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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