#51CDFF#51CDFF

#51CDFF is a light, vivid cyan. Relative luminance 0.526; OKLCH L 79.9% C 0.129 H 228.5°. Best body text is #000000 at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#51CDFF
RGB	rgb(81, 205, 255)
HSL	hsl(197, 100%, 66%)
HSV	hsv(197, 68%, 100%)
CMYK	cmyk(68.2%, 19.6%, 0%, 0%)
CIE-LAB	lab(77.65, -19.05, -34.52)
CIE-LCH	lch(77.65, 39.43, 241.10°)
OKLab	oklab(79.93% -0.0855 -0.0967)
OKLCH	oklch(79.93% 0.129 228.5)
XYZ	xyz(43.2674, 52.6272, 102.4661)
Luminance	0.5263 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CDFF #FF8351

analogous

#51FFDA #51CDFF #5176FF

triadic

#51CDFF #FF51CD #CDFF51

tetradic

#51CDFF #DA51FF #FF8351 #76FF51

square

#51CDFF #DA51FF #FF8351 #76FF51

split-complementary

#51CDFF #FF5176 #FFDA51

monochromatic

#0098D6 #14BBFF #51CDFF #8EDFFF #CBF0FF

Accessibility & contrast

On white

1.82

#51CDFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.53

#51CDFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CDFF

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CDFF	#FFFFFF	#000000	##000000
##51CDFF	1.00	1.82	11.53	11.53
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.53	21.00	1.00	1.00
##000000	11.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3CAFF

Deuteranopia (green-blind)

#9BB8FE

Tritanopia (blue-blind)

#00DBDD

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #51cdff;
/* rgb */ color: rgb(81, 205, 255);
/* oklch */ color: oklch(79.9% 0.129 228.5);

Tailwind

colors: {
  custom: {
    50: '#95dcff',
    500: '#51cdff',
    950: '#000000',
  },
}

SCSS

$custom: #51cdff;
$custom-light: #95dcff;
$custom-dark: #000000;

JSON

{
  "hex": "#51cdff",
  "rgb": {
    "r": 81,
    "g": 205,
    "b": 255
  },
  "hsl": {
    "h": 197.241,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.79933,
    "c": 0.12907,
    "h": 228.5
  },
  "luminance": 0.52632
}

Semantic roles & 50–950 ramp

primary

#51CDFF

secondary

#D05625

accent

#4200E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1518

muted

#808486

Preview Lab

Preview with #51CDFF

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

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