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Plain Nymph Turquoise

#28d3c9
Notes

Plain Nymph Turquoise (#28D3C9) 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 (176°, 68%, 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
#28d3c9
RGB
rgb(40, 211, 201)
HSL
hsl(176, 68%, 49%)
HWB
hwb(176 16% 17%)
OKLCH
oklch(78.5% 0.130 188.6)
P3
color(display-p3 0.4003 0.8155 0.7854)
HSV
hsv(176, 81%, 83%)
LAB
lab(76.83% -42.76 -6.88)
LCH
lch(76.83% 43.31 189.14)
CMYK
cmyk(81%, 0%, 5%, 17%)

Etymology

Plain
adjective

Latin planus, flat, level — used as a color modifier since the medieval period for hues that read as undecorated and direct. Plain white, plain blue: moderate saturation, no shift, no surface effect. Sits in the crisp-bucket center, with the implication of restraint rather than absence.

Nymph
modifier

Greek νύμφη, nature-spirit-and-young-bride. As a color modifier, nymph implies a nature-spirit-and-grove-and-spring quality, the visual register of Hellenic-nymph-and-grove-and-spring hand-nature-spirit-and-grove-and-spring Hellenic-nymph-and-grove-and-spring-and-Arcadian-pastoral nymph-and-nature-spirit-and-grove surfaces under Hellenic-nymph-and-grove-and-spring-and-Arcadian-pastoral Mediterranean-grove-and-stream dappled-grove-light. Sits at the modifier-and-myth end of the grid, parallel to dryad and nereid 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.

#28d3c9
Original
#c7c7c9
Protanopia
#b0b7ca
Deuteranopia
#00d9d0
Tritanopia
#aeaeae
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
1.87:1
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
11.25:1

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
##28D3C9
Display P3
Display P3
color(display-p3 0.4003 0.8155 0.7854)
P3 has subtle headroomOKLCH chroma 0.130

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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