#51CBE6#51CBE6

#51CBE6 is a light, moderate cyan. Relative luminance 0.502; OKLCH L 78.4% C 0.113 H 215.1°. Best body text is #000000 at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#51CBE6
RGB	rgb(81, 203, 230)
HSL	hsl(191, 75%, 61%)
HSV	hsv(191, 65%, 90%)
CMYK	cmyk(64.8%, 11.7%, 0%, 9.8%)
CIE-LAB	lab(76.17, -25.67, -23.39)
CIE-LCH	lch(76.17, 34.73, 222.34°)
OKLab	oklab(78.45% -0.0927 -0.0651)
OKLCH	oklch(78.45% 0.113 215.1)
XYZ	xyz(39.0263, 50.1701, 82.4746)
Luminance	0.5017 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBE6 #E66C51

analogous

#51E6B6 #51CBE6 #5181E6

triadic

#51CBE6 #E651CB #CBE651

tetradic

#51CBE6 #B651E6 #E66C51 #81E651

square

#51CBE6 #B651E6 #E66C51 #81E651

split-complementary

#51CBE6 #E65181 #E6B651

monochromatic

#188BA5 #1FB9DA #51CBE6 #87DBEE #BCEBF5

Accessibility & contrast

On white

1.90

#51CBE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.03

#51CBE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBE6

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBE6	#FFFFFF	#000000	##000000
##51CBE6	1.00	1.90	11.03	11.03
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.03	21.00	1.00	1.00
##000000	11.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C5E8

Deuteranopia (green-blind)

#A3B5E6

Tritanopia (blue-blind)

#00D5D3

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #51cbe6;
/* rgb */ color: rgb(81, 203, 230);
/* oklch */ color: oklch(78.4% 0.113 215.1);

Tailwind

colors: {
  custom: {
    50: '#92dbee',
    500: '#51cbe6',
    950: '#000000',
  },
}

SCSS

$custom: #51cbe6;
$custom-light: #92dbee;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbe6",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 230
  },
  "hsl": {
    "h": 190.872,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.78446,
    "c": 0.11325,
    "h": 215.1
  },
  "luminance": 0.50174
}

Semantic roles & 50–950 ramp

primary

#51CBE6

secondary

#A74934

accent

#330ED7

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CBE6

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

Preview Lab → · Contrast checker → · Palette generator →