#51CBF2#51CBF2

#51CBF2 is a light, vivid cyan. Relative luminance 0.509; OKLCH L 78.9% C 0.120 H 222.7°. Best body text is #000000 at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#51CBF2
RGB	rgb(81, 203, 242)
HSL	hsl(195, 86%, 63%)
HSV	hsv(195, 67%, 95%)
CMYK	cmyk(66.5%, 16.1%, 0%, 5.1%)
CIE-LAB	lab(76.60, -22.05, -29.19)
CIE-LCH	lch(76.60, 36.58, 232.93°)
OKLab	oklab(78.93% -0.0882 -0.0815)
OKLCH	oklch(78.93% 0.12 222.7)
XYZ	xyz(40.7698, 50.8675, 91.6570)
Luminance	0.5087 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBF2 #F27851

analogous

#51F2C8 #51CBF2 #517AF2

triadic

#51CBF2 #F251CB #CBF251

tetradic

#51CBF2 #C851F2 #F27851 #7AF251

square

#51CBF2 #C851F2 #F27851 #7AF251

split-complementary

#51CBF2 #F2517A #F2C851

monochromatic

#0E91BB #18BAEE #51CBF2 #8ADCF6 #C3EDFB

Accessibility & contrast

On white

1.88

#51CBF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.17

#51CBF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBF2

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBF2	#FFFFFF	#000000	##000000
##51CBF2	1.00	1.88	11.17	11.17
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.17	21.00	1.00	1.00
##000000	11.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4C6F4

Deuteranopia (green-blind)

#9EB6F2

Tritanopia (blue-blind)

#00D7D8

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cbf2;
/* rgb */ color: rgb(81, 203, 242);
/* oklch */ color: oklch(78.9% 0.120 222.7);

Tailwind

colors: {
  custom: {
    50: '#93dbf6',
    500: '#51cbf2',
    950: '#000000',
  },
}

SCSS

$custom: #51cbf2;
$custom-light: #93dbf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbf2",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 242
  },
  "hsl": {
    "h": 194.534,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.78928,
    "c": 0.12007,
    "h": 222.7
  },
  "luminance": 0.50872
}

Semantic roles & 50–950 ramp

primary

#51CBF2

secondary

#B9502E

accent

#3903E3

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #51CBF2

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

Preview Lab → · Contrast checker → · Palette generator →