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Healthful Aquarius Turquoise

#4dd7c6
Notes

Healthful Aquarius Turquoise (#4DD7C6) is a true 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 (173°, 63%, 57%) 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
#4dd7c6
RGB
rgb(77, 215, 198)
HSL
hsl(173, 63%, 57%)
HWB
hwb(173 30% 16%)
OKLCH
oklch(80.1% 0.120 183.6)
P3
color(display-p3 0.4634 0.8320 0.7764)
HSV
hsv(173, 64%, 84%)
LAB
lab(78.61% -40.91 -2.57)
LCH
lch(78.61% 40.99 183.60)
CMYK
cmyk(64%, 0%, 8%, 16%)

Etymology

Healthful
adjective

Old English hǣlth, health — adjectival suffix -ful. As a color modifier, healthful implies a clear-and-vital-and-wholesome quality where the hue carries the visual register of fresh-air-and-sunlight outdoor health-promoting environment. Sits at the crisp-and-wholesome end of the grid, parallel to salubrious and wholesome in usage.

Aquarius
modifier

Latin aquarius, water-bearer-of-the-zodiac. As a color modifier, aquarius implies a water-bearer-and-air-sign-and-Saturn-Uranus-ruled-fixed-air quality, the visual register of Hellenic-Aquarius-and-Ganymede-water-bearer hand-water-bearer-and-air-sign-and-Saturn-Uranus-ruled-fixed-air Hellenic-Aquarius-and-Ganymede-water-bearer-and-cup-bearer aquarius-and-water-bearer-and-air-sign surfaces under Hellenic-Aquarius-and-Ganymede-water-bearer-and-cup-bearer mid-winter-and-January-and-February fixed-air-sign-light. Sits at the modifier-and-zodiac end of the grid, parallel to pisces and capricorn 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.

#4dd7c6
Original
#cdcbc5
Protanopia
#b9bcc8
Deuteranopia
#00dbd2
Tritanopia
#b8b8b8
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
1.77:1
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
11.85:1

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
##4DD7C6
Display P3
Display P3
color(display-p3 0.4634 0.8320 0.7764)
P3 has subtle headroomOKLCH chroma 0.120

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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