#51CBF0#51CBF0

#51CBF0 is a light, moderate cyan. Relative luminance 0.508; OKLCH L 78.8% C 0.119 H 221.5°. Best body text is #000000 at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#51CBF0
RGB	rgb(81, 203, 240)
HSL	hsl(194, 84%, 63%)
HSV	hsv(194, 66%, 94%)
CMYK	cmyk(66.3%, 15.4%, 0%, 5.9%)
CIE-LAB	lab(76.53, -22.66, -28.23)
CIE-LCH	lch(76.53, 36.20, 231.24°)
OKLab	oklab(78.85% -0.0889 -0.0788)
OKLCH	oklch(78.85% 0.119 221.5)
XYZ	xyz(40.4710, 50.7480, 90.0836)
Luminance	0.5075 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBF0 #F07651

analogous

#51F0C5 #51CBF0 #517CF0

triadic

#51CBF0 #F051CB #CBF051

tetradic

#51CBF0 #C551F0 #F07651 #7CF051

square

#51CBF0 #C551F0 #F07651 #7CF051

split-complementary

#51CBF0 #F0517C #F0C551

monochromatic

#1090B7 #19BAEB #51CBF0 #89DCF5 #C2EDFA

Accessibility & contrast

On white

1.88

#51CBF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.15

#51CBF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBF0

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBF0	#FFFFFF	#000000	##000000
##51CBF0	1.00	1.88	11.15	11.15
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.15	21.00	1.00	1.00
##000000	11.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C6F2

Deuteranopia (green-blind)

#9FB6F0

Tritanopia (blue-blind)

#00D7D7

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cbf0;
/* rgb */ color: rgb(81, 203, 240);
/* oklch */ color: oklch(78.8% 0.119 221.5);

Tailwind

colors: {
  custom: {
    50: '#93dbf5',
    500: '#51cbf0',
    950: '#000000',
  },
}

SCSS

$custom: #51cbf0;
$custom-light: #93dbf5;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbf0",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 240
  },
  "hsl": {
    "h": 193.962,
    "s": 84.127,
    "l": 62.941
  },
  "oklch": {
    "l": 0.78846,
    "c": 0.11879,
    "h": 221.5
  },
  "luminance": 0.50752
}

Semantic roles & 50–950 ramp

primary

#51CBF0

secondary

#B64F2F

accent

#3805E1

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #51CBF0

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

Preview Lab → · Contrast checker → · Palette generator →