#51CDF0#51CDF0

#51CDF0 is a light, moderate cyan. Relative luminance 0.517; OKLCH L 79.3% C 0.119 H 220.0°. Best body text is #000000 at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#51CDF0
RGB	rgb(81, 205, 240)
HSL	hsl(193, 84%, 63%)
HSV	hsv(193, 66%, 94%)
CMYK	cmyk(66.3%, 14.6%, 0%, 5.9%)
CIE-LAB	lab(77.10, -23.67, -27.35)
CIE-LCH	lch(77.10, 36.17, 229.13°)
OKLab	oklab(79.31% -0.0909 -0.0762)
OKLCH	oklch(79.31% 0.119 220)
XYZ	xyz(40.9464, 51.6987, 90.2421)
Luminance	0.5170 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CDF0 #F07451

analogous

#51F0C4 #51CDF0 #517DF0

triadic

#51CDF0 #F051CD #CDF051

tetradic

#51CDF0 #C451F0 #F07451 #7DF051

square

#51CDF0 #C451F0 #F07451 #7DF051

split-complementary

#51CDF0 #F0517D #F0C451

monochromatic

#1092B7 #19BDEB #51CDF0 #89DDF5 #C2EDFA

Accessibility & contrast

On white

1.85

#51CDF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.34

#51CDF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CDF0

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CDF0	#FFFFFF	#000000	##000000
##51CDF0	1.00	1.85	11.34	11.34
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.34	21.00	1.00	1.00
##000000	11.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C8F2

Deuteranopia (green-blind)

#A1B7F0

Tritanopia (blue-blind)

#00D9D8

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51cdf0;
/* rgb */ color: rgb(81, 205, 240);
/* oklch */ color: oklch(79.3% 0.119 220.0);

Tailwind

colors: {
  custom: {
    50: '#93dcf5',
    500: '#51cdf0',
    950: '#000000',
  },
}

SCSS

$custom: #51cdf0;
$custom-light: #93dcf5;
$custom-dark: #000000;

JSON

{
  "hex": "#51cdf0",
  "rgb": {
    "r": 81,
    "g": 205,
    "b": 240
  },
  "hsl": {
    "h": 193.208,
    "s": 84.127,
    "l": 62.941
  },
  "oklch": {
    "l": 0.79306,
    "c": 0.11865,
    "h": 220
  },
  "luminance": 0.51703
}

Semantic roles & 50–950 ramp

primary

#51CDF0

secondary

#B64D2F

accent

#3505E1

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #51CDF0

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

Preview Lab → · Contrast checker → · Palette generator →