#51DEFE#51DEFE

#51DEFE is a very light, vivid cyan. Relative luminance 0.611; OKLCH L 83.8% C 0.126 H 215.9°. Best body text is #000000 at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#51DEFE
RGB	rgb(81, 222, 254)
HSL	hsl(191, 99%, 66%)
HSV	hsv(191, 68%, 100%)
CMYK	cmyk(68.1%, 12.6%, 0%, 0.4%)
CIE-LAB	lab(82.46, -27.88, -26.61)
CIE-LCH	lch(82.46, 38.54, 223.67°)
OKLab	oklab(83.77% -0.1022 -0.0741)
OKLCH	oklch(83.77% 0.126 215.9)
XYZ	xyz(47.3965, 61.1423, 103.0504)
Luminance	0.6115 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DEFE #FE7151

analogous

#51FEC7 #51DEFE #5187FE

triadic

#51DEFE #FE51DE #DEFE51

tetradic

#51DEFE #C751FE #FE7151 #87FE51

square

#51DEFE #C751FE #FE7151 #87FE51

split-complementary

#51DEFE #FE5187 #FEC751

monochromatic

#01ADD3 #14D2FE #51DEFE #8EEAFE #CBF5FF

Accessibility & contrast

On white

1.59

#51DEFE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.23

#51DEFE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DEFE

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DEFE	#FFFFFF	#000000	##000000
##51DEFE	1.00	1.59	13.23	13.23
#FFFFFF	1.59	1.00	21.00	21.00
#000000	13.23	21.00	1.00	1.00
##000000	13.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8D7FF

Deuteranopia (green-blind)

#B0C5FE

Tritanopia (blue-blind)

#00EAE8

Achromatopsia (no color)

#CDCDCD

Design tokens & code

CSS

--color: #51defe;
/* rgb */ color: rgb(81, 222, 254);
/* oklch */ color: oklch(83.8% 0.126 215.9);

Tailwind

colors: {
  custom: {
    50: '#96e8fe',
    500: '#51defe',
    950: '#000000',
  },
}

SCSS

$custom: #51defe;
$custom-light: #96e8fe;
$custom-dark: #000000;

JSON

{
  "hex": "#51defe",
  "rgb": {
    "r": 81,
    "g": 222,
    "b": 254
  },
  "hsl": {
    "h": 191.098,
    "s": 98.857,
    "l": 65.686
  },
  "oklch": {
    "l": 0.83768,
    "c": 0.12629,
    "h": 215.9
  },
  "luminance": 0.61148
}

Semantic roles & 50–950 ramp

primary

#51DEFE

secondary

#CE4525

accent

#2A00E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1617

muted

#808485

Preview Lab

Preview with #51DEFE

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

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