#51DAFF#51DAFF

#51DAFF is a very light, vivid cyan. Relative luminance 0.591; OKLCH L 82.9% C 0.127 H 219.4°. Best body text is #000000 at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#51DAFF
RGB	rgb(81, 218, 255)
HSL	hsl(193, 100%, 66%)
HSV	hsv(193, 68%, 100%)
CMYK	cmyk(68.2%, 14.5%, 0%, 0%)
CIE-LAB	lab(81.35, -25.61, -28.83)
CIE-LCH	lch(81.35, 38.57, 228.38°)
OKLab	oklab(82.89% -0.098 -0.0804)
OKLCH	oklch(82.89% 0.127 219.4)
XYZ	xyz(46.5073, 59.1069, 103.5461)
Luminance	0.5911 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DAFF #FF7651

analogous

#51FFCD #51DAFF #5183FF

triadic

#51DAFF #FF51DA #DAFF51

tetradic

#51DAFF #CD51FF #FF7651 #83FF51

square

#51DAFF #CD51FF #FF7651 #83FF51

split-complementary

#51DAFF #FF5183 #FFCD51

monochromatic

#00A8D6 #14CDFF #51DAFF #8EE7FF #CBF4FF

Accessibility & contrast

On white

1.64

#51DAFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.82

#51DAFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DAFF

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DAFF	#FFFFFF	#000000	##000000
##51DAFF	1.00	1.64	12.82	12.82
#FFFFFF	1.64	1.00	21.00	21.00
#000000	12.82	21.00	1.00	1.00
##000000	12.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3D4FF

Deuteranopia (green-blind)

#ABC2FF

Tritanopia (blue-blind)

#00E6E6

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #51daff;
/* rgb */ color: rgb(81, 218, 255);
/* oklch */ color: oklch(82.9% 0.127 219.4);

Tailwind

colors: {
  custom: {
    50: '#96e5ff',
    500: '#51daff',
    950: '#000000',
  },
}

SCSS

$custom: #51daff;
$custom-light: #96e5ff;
$custom-dark: #000000;

JSON

{
  "hex": "#51daff",
  "rgb": {
    "r": 81,
    "g": 218,
    "b": 255
  },
  "hsl": {
    "h": 192.759,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.82892,
    "c": 0.12679,
    "h": 219.4
  },
  "luminance": 0.59112
}

Semantic roles & 50–950 ramp

primary

#51DAFF

secondary

#D04925

accent

#3100E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1518

muted

#808486

Preview Lab

Preview with #51DAFF

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

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