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Brilliant Catnip Turquoise

#37dbc8
Notes

Brilliant Catnip Turquoise (#37DBC8) 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 (173°, 69%, 54%) 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
#37dbc8
RGB
rgb(55, 219, 200)
HSL
hsl(173, 69%, 54%)
HWB
hwb(173 22% 14%)
OKLCH
oklch(80.6% 0.132 183.3)
P3
color(display-p3 0.4330 0.8468 0.7845)
HSV
hsv(173, 75%, 86%)
LAB
lab(79.41% -45.09 -2.51)
LCH
lch(79.41% 45.16 183.19)
CMYK
cmyk(75%, 0%, 9%, 14%)

Etymology

Brilliant
adjective

From the Italian brillante, sparkling — used as a color modifier since the seventeenth century for hues that read as optically active beyond their literal saturation. Brilliant green, brilliant blue: the implication is luminance combined with the slight sparkle of a high-refractive surface. Sits at the bright-bucket center alongside vivid and bright.

Catnip
modifier

Old English catte-nepe, cat-mint-or-catnip. As a color modifier, catnip implies a cat-mint-and-grey-green-cottage-herb quality, the visual register of English-cottage-and-Quaker-herb-garden-catnip hand-cat-mint-and-grey-green-cottage-herb English-cottage-and-Quaker-herb-garden-catnip-and-Tudor-still-room catnip-and-cat-mint surfaces under English-cottage-and-Quaker-herb-garden-catnip-and-Tudor-still-room Sussex-cottage-and-New-England-Quaker-garden cottage-herb-light. Sits at the modifier-and-flavor end of the grid, parallel to hyssop and lovage 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.

#37dbc8
Original
#d0cec7
Protanopia
#babeca
Deuteranopia
#00dfd5
Tritanopia
#b7b7b7
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
1.73:1
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
12.13:1

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
##37DBC8
Display P3
Display P3
color(display-p3 0.4330 0.8468 0.7845)
P3 has subtle headroomOKLCH chroma 0.132

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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