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Placid Caraway Turquoise

#51ddc9
Notes

Placid Caraway Turquoise (#51DDC9) 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 (171°, 67%, 59%) 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
#51ddc9
RGB
rgb(81, 221, 201)
HSL
hsl(171, 67%, 59%)
HWB
hwb(171 32% 13%)
OKLCH
oklch(81.7% 0.123 182.0)
P3
color(display-p3 0.4801 0.8553 0.7891)
HSV
hsv(171, 63%, 87%)
LAB
lab(80.56% -42.17 -1.30)
LCH
lch(80.56% 42.19 181.77)
CMYK
cmyk(63%, 0%, 9%, 13%)

Etymology

Placid
adjective

Latin placidus, gentle / quiet — derived from placēre (to please). As a color modifier, placid implies a clear-and-unruffled quality where the hue carries the visual register of mirror-smooth lake-surface in windless mid-morning. Sits at the crisp-and-calm end of the grid, parallel to serene and peaceful in usage.

Caraway
modifier

Arabic al-karawiyā, aromatic-rye-bread-seed. As a color modifier, caraway implies an aromatic-rye-bread-and-Central-European-seed quality, the visual register of Bavarian-and-Central-European-caraway hand-aromatic-rye-bread-and-Central-European-seed Bavarian-and-Central-European-caraway-and-Czech-and-Hungarian-rye caraway-and-aromatic-rye-bread surfaces under Bavarian-and-Central-European-caraway-and-Czech-and-Hungarian-rye Bavaria-and-Bohemia-and-Hungary Central-European-rye-light. Sits at the modifier-and-flavor end of the grid, parallel to cumin and anise 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.

#51ddc9
Original
#d3d1c8
Protanopia
#bfc2cb
Deuteranopia
#00e1d7
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
1.68:1
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
12.54:1

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
##51DDC9
Display P3
Display P3
color(display-p3 0.4801 0.8553 0.7891)
P3 has subtle headroomOKLCH chroma 0.123

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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