#51C8CB#51C8CB

#51C8CB is a light, moderate teal. Relative luminance 0.474; OKLCH L 76.7% C 0.105 H 197.5°. Best body text is #000000 at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#51C8CB
RGB	rgb(81, 200, 203)
HSL	hsl(181, 54%, 56%)
HSV	hsv(181, 60%, 80%)
CMYK	cmyk(60.1%, 1.5%, 0%, 20.4%)
CIE-LAB	lab(74.42, -31.98, -11.45)
CIE-LCH	lch(74.42, 33.97, 199.70°)
OKLab	oklab(76.75% -0.1006 -0.0317)
OKLCH	oklch(76.75% 0.105 197.5)
XYZ	xyz(34.8225, 47.3660, 63.7957)
Luminance	0.4737 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C8CB #CB5451

analogous

#51CB91 #51C8CB #518BCB

triadic

#51C8CB #CB51C8 #C8CB51

tetradic

#51C8CB #9151CB #CB5451 #8BCB51

square

#51C8CB #9151CB #CB5451 #8BCB51

split-complementary

#51C8CB #CB518B #CB9151

monochromatic

#257A7C #33A9AC #51C8CB #80D7D9 #AFE6E7

Accessibility & contrast

On white

2.00

#51C8CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.47

#51C8CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C8CB

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C8CB	#FFFFFF	#000000	##000000
##51C8CB	1.00	2.00	10.47	10.47
#FFFFFF	2.00	1.00	21.00	21.00
#000000	10.47	21.00	1.00	1.00
##000000	10.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBBFCB

Deuteranopia (green-blind)

#A8B1CC

Tritanopia (blue-blind)

#00CEC9

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #51c8cb;
/* rgb */ color: rgb(81, 200, 203);
/* oklch */ color: oklch(76.7% 0.105 197.5);

Tailwind

colors: {
  custom: {
    50: '#8fd9da',
    500: '#51c8cb',
    950: '#000000',
  },
}

SCSS

$custom: #51c8cb;
$custom-light: #8fd9da;
$custom-dark: #000000;

JSON

{
  "hex": "#51c8cb",
  "rgb": {
    "r": 81,
    "g": 200,
    "b": 203
  },
  "hsl": {
    "h": 181.475,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.76746,
    "c": 0.10546,
    "h": 197.5
  },
  "luminance": 0.4737
}

Semantic roles & 50–950 ramp

primary

#51C8CB

secondary

#D5A4A3

accent

#4E4ADD

background

#F9FDFD

surface

#F2FAFA

border

#CCD3D3

text

#0E1414

muted

#7E8383

Preview Lab

Preview with #51C8CB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →