#51CBFF#51CBFF

#51CBFF is a light, vivid cyan. Relative luminance 0.517; OKLCH L 79.5% C 0.130 H 229.9°. Best body text is #000000 at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#51CBFF
RGB	rgb(81, 203, 255)
HSL	hsl(198, 100%, 66%)
HSV	hsv(198, 68%, 100%)
CMYK	cmyk(68.2%, 20.4%, 0%, 0%)
CIE-LAB	lab(77.09, -18.02, -35.40)
CIE-LCH	lch(77.09, 39.72, 243.02°)
OKLab	oklab(79.48% -0.0835 -0.0992)
OKLCH	oklch(79.48% 0.13 229.9)
XYZ	xyz(42.7921, 51.6764, 102.3077)
Luminance	0.5168 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBFF #FF8551

analogous

#51FFDC #51CBFF #5174FF

triadic

#51CBFF #FF51CB #CBFF51

tetradic

#51CBFF #DC51FF #FF8551 #74FF51

square

#51CBFF #DC51FF #FF8551 #74FF51

split-complementary

#51CBFF #FF5174 #FFDC51

monochromatic

#0096D6 #14B9FF #51CBFF #8EDDFF #CBF0FF

Accessibility & contrast

On white

1.85

#51CBFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.34

#51CBFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBFF

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBFF	#FFFFFF	#000000	##000000
##51CBFF	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)

#B0C8FF

Deuteranopia (green-blind)

#98B7FE

Tritanopia (blue-blind)

#00D9DC

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51cbff;
/* rgb */ color: rgb(81, 203, 255);
/* oklch */ color: oklch(79.5% 0.130 229.9);

Tailwind

colors: {
  custom: {
    50: '#95daff',
    500: '#51cbff',
    950: '#000000',
  },
}

SCSS

$custom: #51cbff;
$custom-light: #95daff;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbff",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 255
  },
  "hsl": {
    "h": 197.931,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.7948,
    "c": 0.12973,
    "h": 229.9
  },
  "luminance": 0.51681
}

Semantic roles & 50–950 ramp

primary

#51CBFF

secondary

#D05825

accent

#4500E6

background

#FCFEFF

surface

#F5FBFF

border

#CFD4D7

text

#0F1518

muted

#808486

Preview Lab

Preview with #51CBFF

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

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