#51CBEB#51CBEB

#51CBEB is a light, moderate cyan. Relative luminance 0.505; OKLCH L 78.6% C 0.116 H 218.4°. Best body text is #000000 at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#51CBEB
RGB	rgb(81, 203, 235)
HSL	hsl(192, 79%, 62%)
HSV	hsv(192, 66%, 92%)
CMYK	cmyk(65.5%, 13.6%, 0%, 7.8%)
CIE-LAB	lab(76.35, -24.17, -25.82)
CIE-LCH	lch(76.35, 35.37, 226.88°)
OKLab	oklab(78.64% -0.0908 -0.0719)
OKLCH	oklch(78.64% 0.116 218.4)
XYZ	xyz(39.7385, 50.4550, 86.2257)
Luminance	0.5046 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBEB #EB7151

analogous

#51EBBE #51CBEB #517EEB

triadic

#51CBEB #EB51CB #CBEB51

tetradic

#51CBEB #BE51EB #EB7151 #7EEB51

square

#51CBEB #BE51EB #EB7151 #7EEB51

split-complementary

#51CBEB #EB517E #EBBE51

monochromatic

#148EAE #1ABBE5 #51CBEB #88DBF1 #BFECF8

Accessibility & contrast

On white

1.89

#51CBEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.09

#51CBEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBEB

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBEB	#FFFFFF	#000000	##000000
##51CBEB	1.00	1.89	11.09	11.09
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.09	21.00	1.00	1.00
##000000	11.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C5ED

Deuteranopia (green-blind)

#A1B5EB

Tritanopia (blue-blind)

#00D6D5

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #51cbeb;
/* rgb */ color: rgb(81, 203, 235);
/* oklch */ color: oklch(78.6% 0.116 218.4);

Tailwind

colors: {
  custom: {
    50: '#92dbf1',
    500: '#51cbeb',
    950: '#000000',
  },
}

SCSS

$custom: #51cbeb;
$custom-light: #92dbf1;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbeb",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 235
  },
  "hsl": {
    "h": 192.468,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.78643,
    "c": 0.11582,
    "h": 218.4
  },
  "luminance": 0.50459
}

Semantic roles & 50–950 ramp

primary

#51CBEB

secondary

#AE4C32

accent

#350ADC

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CBEB

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

Preview Lab → · Contrast checker → · Palette generator →