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Sterile Soothe Turquoise

#46b5c8
Notes

Sterile Soothe Turquoise (#46B5C8) 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 (189°, 54%, 53%) 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
#46b5c8
RGB
rgb(70, 181, 200)
HSL
hsl(189, 54%, 53%)
HWB
hwb(189 27% 22%)
OKLCH
oklch(71.8% 0.102 210.9)
P3
color(display-p3 0.3993 0.7005 0.7738)
HSV
hsv(189, 65%, 78%)
LAB
lab(68.40% -25.37 -18.92)
LCH
lch(68.40% 31.65 216.71)
CMYK
cmyk(65%, 9%, 0%, 22%)

Etymology

Sterile
adjective

Latin sterilis, barren / not-fertile — sharing root with Greek steiros (barren). As a color modifier, sterile implies a clear-and-medical-clean-and-stripped quality, the crisp color of operating-theater surgical-environment white-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and hygienic in usage.

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.

#46b5c8
Original
#a5afc9
Protanopia
#92a1c8
Deuteranopia
#00bdbb
Tritanopia
#9f9f9f
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
2.41:1
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
8.70:1

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
##46B5C8
Display P3
Display P3
color(display-p3 0.3993 0.7005 0.7738)
P3 has subtle headroomOKLCH chroma 0.102

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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