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Beaming Sanded Turquoise

#21ded5
Notes

Beaming Sanded Turquoise (#21DED5) 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°, 74%, 50%) 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
#21ded5
RGB
rgb(33, 222, 213)
HSL
hsl(177, 74%, 50%)
HWB
hwb(177 13% 13%)
OKLCH
oklch(81.4% 0.137 189.5)
P3
color(display-p3 0.4130 0.8579 0.8317)
HSV
hsv(177, 85%, 87%)
LAB
lab(80.38% -44.69 -8.04)
LCH
lch(80.38% 45.41 190.19)
CMYK
cmyk(85%, 0%, 4%, 13%)

Etymology

Beaming
adjective

The progressive participle of beam, to emit a directional light — used as a color word since the nineteenth century for hues that read as if focused and projecting. Beaming yellow, beaming pink: the implication is luminance combined with directionality. Sits at the bright-bucket center alongside radiant and glowing.

Sanded
modifier

Old English sandian, to-sand. As a color modifier, sanded implies a hand-sanded-and-smoothed-wood quality, the visual register of Shaker-and-Mid-Century-Modern-sanded hand-sanded-and-smoothed-and-finished wood-and-stone-and-metal Shaker-and-Mid-Century-Modern hand-sanded-and-smoothed surfaces under Shaker-and-Mid-Century-Modern hand-sanded-and-smoothed workshop-light. Sits at the modifier-and-texture end of the grid, parallel to honed and buffed 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.

#21ded5
Original
#d1d2d5
Protanopia
#b9c0d6
Deuteranopia
#00e4db
Tritanopia
#b5b5b5
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
1.68:1
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
12.47:1

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
##21DED5
Display P3
Display P3
color(display-p3 0.4130 0.8579 0.8317)
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.

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