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Stable Chiton Robin

#90ddcd
Notes

Stable Chiton Robin (#90DDCD) is a soft teal with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (168°, 53%, 72%) places it in the balanced band at a light lightness. It works as a background wash, large-area fill, or soft illustration tone. Add a darker ink of the same hue when you need type over it. 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
#90ddcd
RGB
rgb(144, 221, 205)
HSL
hsl(168, 53%, 72%)
HWB
hwb(168 56% 13%)
OKLCH
oklch(84.3% 0.080 179.7)
P3
color(display-p3 0.6325 0.8588 0.8054)
HSV
hsv(168, 35%, 87%)
LAB
lab(82.94% -27.26 0.33)
LCH
lch(82.94% 27.26 179.32)
CMYK
cmyk(35%, 0%, 7%, 13%)

Etymology

Stable
adjective

Latin stabilis, standing-firm — sharing root with stand. As a color modifier, stable implies a clear-and-firm-and-unchanging quality where the hue carries the visual register of resistant-to-modulation-and-fade pigmentation. Sits at the crisp-and-firm end of the grid, parallel to steady and settled in usage.

Chiton
modifier

Greek χιτών, Hellenic-tunic. As a color modifier, chiton implies a Hellenic-tunic-and-pinned-and-pleated quality, the visual register of Hellenic-Doric-and-Ionic-chiton hand-Hellenic-tunic-and-pinned-and-pleated Hellenic-Doric-and-Ionic-chiton-and-Phidias-Parthenon chiton-and-Hellenic-tunic surfaces under Hellenic-Doric-and-Ionic-chiton-and-Phidias-Parthenon Athenian-Acropolis-and-Hellenic-court Hellenic-tunic-light. Sits at the modifier-and-textile end of the grid, parallel to peplos and tunic in usage.

Robin
noun

The American robin (Turdus migratorius) — though the color refers not to the bird's red breast but to the egg, robin's-egg blue, a pale slightly green-shifted blue produced by biliverdin pigment in the eggshell. The color is the inside surface of a fresh robin's nest at peak laying: a soft, slightly green-shifted pale blue with the matte finish of avian eggshell. Lighter than aqua, cooler than turquoise.

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.

#90ddcd
Original
#d7d4cc
Protanopia
#c9cace
Deuteranopia
#77dfd8
Tritanopia
#cbcbcb
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
1.57:1
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
13.41:1

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
##90DDCD
Display P3
Display P3
color(display-p3 0.6325 0.8588 0.8054)
Inside sRGBOKLCH chroma 0.080

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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