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Antiseptic Blink Turquoise

#4cdecb
Notes

Antiseptic Blink Turquoise (#4CDECB) is a true teal with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (172°, 69%, 58%) 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
#4cdecb
RGB
rgb(76, 222, 203)
HSL
hsl(172, 69%, 58%)
HWB
hwb(172 30% 13%)
OKLCH
oklch(81.9% 0.126 182.8)
P3
color(display-p3 0.4721 0.8590 0.7965)
HSV
hsv(172, 66%, 87%)
LAB
lab(80.79% -42.88 -2.04)
LCH
lch(80.79% 42.93 182.73)
CMYK
cmyk(66%, 0%, 9%, 13%)

Etymology

Antiseptic
adjective

Greek anti- (against) plus sēptikós (putrefying) — adjectival suffix -ic. As a color modifier, antiseptic implies a clear-and-disinfected-and-clinical quality, the crisp color of medical-laboratory and operating-theater hand-scrub-and-sanitizer surfaces. Sits at the crisp-and-clean end of the grid, parallel to sterile and sanitary in usage.

Blink
modifier

Middle Dutch blinken, to-shine-or-twinkle. As a color modifier, blink implies a quick-and-twinkling-and-on-off quality, the visual register of lighthouse-beam-and-firefly-blink hand-quick-and-twinkling-and-on-off lighthouse-beam-and-firefly-and-Morse-lamp blinked-and-quick-and-twinkling surfaces under lighthouse-beam-and-firefly-and-Morse-lamp coastal-headland-and-summer-meadow rotating-and-pulsed-light. Sits at the modifier-and-mood end of the grid, parallel to wink and glint 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.

#4cdecb
Original
#d4d2ca
Protanopia
#bfc2cd
Deuteranopia
#00e2d8
Tritanopia
#bebebe
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
1.66:1
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
12.62:1

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
##4CDECB
Display P3
Display P3
color(display-p3 0.4721 0.8590 0.7965)
P3 has subtle headroomOKLCH chroma 0.126

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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