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Open Soothe Turquoise

#11bfd2
Notes

Open Soothe Turquoise (#11BFD2) is a true cyan with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (186°, 85%, 45%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#11bfd2
RGB
rgb(17, 191, 210)
HSL
hsl(186, 85%, 45%)
HWB
hwb(186 7% 18%)
OKLCH
oklch(73.7% 0.125 207.6)
P3
color(display-p3 0.3443 0.7379 0.8121)
HSV
hsv(186, 92%, 82%)
LAB
lab(70.89% -32.26 -20.69)
LCH
lch(70.89% 38.32 212.68)
CMYK
cmyk(92%, 9%, 0%, 18%)

Etymology

Open
adjective

Old English open, unobstructed — used as a color modifier since the eighteenth century for hues that read as airy or uncrowded. Open blue, open green: moderate saturation combined with optical spaciousness, the slight visual breath of a hue that doesn't crowd the surface it covers. Sits at the crisp-bucket center alongside clear.

Soothe
modifier

Old English sōthian, to-verify-and-calm. As a color modifier, soothe implies a calmed-and-balm-and-pacified quality, the visual register of apothecary-balm-and-lullaby-soothe hand-balmed-and-anointed-and-pacified apothecary-balm-and-cradle-song-and-bedside-vigil soothed-and-calmed-and-balmed surfaces under apothecary-balm-and-cradle-song bedside-vigil-and-nursery hush-and-balm-light. Sits at the modifier-and-mood end of the grid, parallel to lull and hush 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.

#11bfd2
Original
#adb7d3
Protanopia
#96a6d2
Deuteranopia
#00c8c5
Tritanopia
#9b9b9b
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
2.23:1
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
9.41:1

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
##11BFD2
Display P3
Display P3
color(display-p3 0.3443 0.7379 0.8121)
P3 has subtle headroomOKLCH chroma 0.125

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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