#51E1EE#51E1EE

#51E1EE is a very light, vivid teal. Relative luminance 0.618; OKLCH L 83.9% C 0.122 H 203.7°. Best body text is #000000 at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#51E1EE
RGB	rgb(81, 225, 238)
HSL	hsl(185, 82%, 63%)
HSV	hsv(185, 66%, 93%)
CMYK	cmyk(66%, 5.5%, 0%, 6.7%)
CIE-LAB	lab(82.79, -33.98, -17.64)
CIE-LCH	lch(82.79, 38.29, 207.43°)
OKLab	oklab(83.86% -0.1114 -0.0489)
OKLCH	oklch(83.86% 0.122 203.7)
XYZ	xyz(45.7445, 61.7677, 90.3839)
Luminance	0.6177 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E1EE #EE5E51

analogous

#51EEAC #51E1EE #5193EE

triadic

#51E1EE #EE51E1 #E1EE51

tetradic

#51E1EE #AC51EE #EE5E51 #93EE51

square

#51E1EE #AC51EE #EE5E51 #93EE51

split-complementary

#51E1EE #EE5193 #EEAC51

monochromatic

#11A6B3 #19D7E9 #51E1EE #89EBF3 #C1F4F9

Accessibility & contrast

On white

1.57

#51E1EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.35

#51E1EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E1EE

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E1EE	#FFFFFF	#000000	##000000
##51E1EE	1.00	1.57	13.35	13.35
#FFFFFF	1.57	1.00	21.00	21.00
#000000	13.35	21.00	1.00	1.00
##000000	13.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0D8EF

Deuteranopia (green-blind)

#B9C7EF

Tritanopia (blue-blind)

#00EAE5

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #51e1ee;
/* rgb */ color: rgb(81, 225, 238);
/* oklch */ color: oklch(83.9% 0.122 203.7);

Tailwind

colors: {
  custom: {
    50: '#95ebf3',
    500: '#51e1ee',
    950: '#000000',
  },
}

SCSS

$custom: #51e1ee;
$custom-light: #95ebf3;
$custom-dark: #000000;

JSON

{
  "hex": "#51e1ee",
  "rgb": {
    "r": 81,
    "g": 225,
    "b": 238
  },
  "hsl": {
    "h": 184.968,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.83863,
    "c": 0.1217,
    "h": 203.7
  },
  "luminance": 0.61773
}

Semantic roles & 50–950 ramp

primary

#51E1EE

secondary

#B33B30

accent

#1907DF

background

#FCFEFF

surface

#F5FDFE

border

#CFD5D6

text

#0F1617

muted

#808485

Preview Lab

Preview with #51E1EE

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

Preview Lab → · Contrast checker → · Palette generator →