#51DEFF#51DEFF

#51DEFF is a very light, vivid cyan. Relative luminance 0.612; OKLCH L 83.8% C 0.127 H 216.5°. Best body text is #000000 at 13.24:1 contrast (WCAG AA passes).

Color values

HEX	#51DEFF
RGB	rgb(81, 222, 255)
HSL	hsl(191, 100%, 66%)
HSV	hsv(191, 68%, 100%)
CMYK	cmyk(68.2%, 12.9%, 0%, 0%)
CIE-LAB	lab(82.49, -27.58, -27.09)
CIE-LCH	lch(82.49, 38.66, 224.48°)
OKLab	oklab(83.81% -0.1019 -0.0755)
OKLCH	oklch(83.81% 0.127 216.5)
XYZ	xyz(47.5571, 61.2065, 103.8960)
Luminance	0.6121 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DEFF #FF7251

analogous

#51FFC9 #51DEFF #5187FF

triadic

#51DEFF #FF51DE #DEFF51

tetradic

#51DEFF #C951FF #FF7251 #87FF51

square

#51DEFF #C951FF #FF7251 #87FF51

split-complementary

#51DEFF #FF5187 #FFC951

monochromatic

#00ADD6 #14D2FF #51DEFF #8EEAFF #CBF5FF

Accessibility & contrast

On white

1.59

#51DEFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.24

#51DEFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DEFF

13.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DEFF	#FFFFFF	#000000	##000000
##51DEFF	1.00	1.59	13.24	13.24
#FFFFFF	1.59	1.00	21.00	21.00
#000000	13.24	21.00	1.00	1.00
##000000	13.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8D7FF

Deuteranopia (green-blind)

#AFC6FF

Tritanopia (blue-blind)

#00EAE8

Achromatopsia (no color)

#CDCDCD

Design tokens & code

CSS

--color: #51deff;
/* rgb */ color: rgb(81, 222, 255);
/* oklch */ color: oklch(83.8% 0.127 216.5);

Tailwind

colors: {
  custom: {
    50: '#96e8ff',
    500: '#51deff',
    950: '#000000',
  },
}

SCSS

$custom: #51deff;
$custom-light: #96e8ff;
$custom-dark: #000000;

JSON

{
  "hex": "#51deff",
  "rgb": {
    "r": 81,
    "g": 222,
    "b": 255
  },
  "hsl": {
    "h": 191.379,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.83807,
    "c": 0.12678,
    "h": 216.5
  },
  "luminance": 0.61212
}

Semantic roles & 50–950 ramp

primary

#51DEFF

secondary

#D04525

accent

#2C00E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1618

muted

#808486

Preview Lab

Preview with #51DEFF

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

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