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Steady Heaven

#24a6a0
Notes

Steady Heaven (#24A6A0) is a true cyan 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 (177°, 64%, 40%) 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
#24a6a0
RGB
rgb(36, 166, 160)
HSL
hsl(177, 64%, 40%)
HWB
hwb(177 14% 35%)
OKLCH
oklch(65.8% 0.106 190.1)
HSV
hsv(177, 78%, 65%)
LAB
lab(61.81% -34.54 -6.64)
LCH
lch(61.81% 35.17 190.87)
CMYK
cmyk(78%, 0%, 4%, 35%)

Etymology

Steady
adjective

Old English stede, place, position — drifted to mean firm and unmoving. Used as a color modifier since the seventeenth century for hues that read as reliable rather than dramatic. Steady gray, steady green: moderate saturation combined with optical calmness. Sits in the crisp-bucket center alongside settled.

Heaven
noun

The vault of the sky and (in religious vocabulary) the realm of the divine — and the saturated blue used in medieval European religious painting for sky, Mary's mantle, and divine background. Heaven color refers to a Florentine Annunciation azure background: a saturated, slightly cool deep blue with the matte finish of ultramarine pigment in tempera.

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

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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.

#24a6a0
Original
#9c9da0
Protanopia
#8a90a1
Deuteranopia
#00aba4
Tritanopia
#8a8a8a
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
2.98:1
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
7.04:1

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