#51CBE8#51CBE8

#51CBE8 is a light, moderate cyan. Relative luminance 0.503; OKLCH L 78.5% C 0.114 H 216.4°. Best body text is #000000 at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#51CBE8
RGB	rgb(81, 203, 232)
HSL	hsl(192, 77%, 61%)
HSV	hsv(192, 65%, 91%)
CMYK	cmyk(65.1%, 12.5%, 0%, 9%)
CIE-LAB	lab(76.24, -25.07, -24.36)
CIE-LCH	lch(76.24, 34.96, 224.18°)
OKLab	oklab(78.52% -0.0919 -0.0678)
OKLCH	oklch(78.52% 0.114 216.4)
XYZ	xyz(39.3088, 50.2831, 83.9623)
Luminance	0.5029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBE8 #E86E51

analogous

#51E8BA #51CBE8 #5180E8

triadic

#51CBE8 #E851CB #CBE851

tetradic

#51CBE8 #BA51E8 #E86E51 #80E851

square

#51CBE8 #BA51E8 #E86E51 #80E851

split-complementary

#51CBE8 #E85180 #E8BA51

monochromatic

#168CA8 #1DB9DE #51CBE8 #87DBEF #BDEBF6

Accessibility & contrast

On white

1.90

#51CBE8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.06

#51CBE8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBE8

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBE8	#FFFFFF	#000000	##000000
##51CBE8	1.00	1.90	11.06	11.06
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.06	21.00	1.00	1.00
##000000	11.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C5EA

Deuteranopia (green-blind)

#A2B5E8

Tritanopia (blue-blind)

#00D5D4

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #51cbe8;
/* rgb */ color: rgb(81, 203, 232);
/* oklch */ color: oklch(78.5% 0.114 216.4);

Tailwind

colors: {
  custom: {
    50: '#92dbef',
    500: '#51cbe8',
    950: '#000000',
  },
}

SCSS

$custom: #51cbe8;
$custom-light: #92dbef;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbe8",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 232
  },
  "hsl": {
    "h": 191.523,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.78524,
    "c": 0.11423,
    "h": 216.4
  },
  "luminance": 0.50287
}

Semantic roles & 50–950 ramp

primary

#51CBE8

secondary

#AA4A33

accent

#340DD9

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CBE8

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

Preview Lab → · Contrast checker → · Palette generator →