#51D0FF#51D0FF

#51D0FF is a light, vivid cyan. Relative luminance 0.541; OKLCH L 80.6% C 0.128 H 226.4°. Best body text is #000000 at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#51D0FF
RGB	rgb(81, 208, 255)
HSL	hsl(196, 100%, 66%)
HSV	hsv(196, 68%, 100%)
CMYK	cmyk(68.2%, 18.4%, 0%, 0%)
CIE-LAB	lab(78.51, -20.59, -33.20)
CIE-LCH	lch(78.51, 39.07, 238.20°)
OKLab	oklab(80.61% -0.0884 -0.0929)
OKLCH	oklch(80.61% 0.128 226.4)
XYZ	xyz(43.9919, 54.0762, 102.7076)
Luminance	0.5408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D0FF #FF8051

analogous

#51FFD7 #51D0FF #5179FF

triadic

#51D0FF #FF51D0 #D0FF51

tetradic

#51D0FF #D751FF #FF8051 #79FF51

square

#51D0FF #D751FF #FF8051 #79FF51

split-complementary

#51D0FF #FF5179 #FFD751

monochromatic

#009CD6 #14BFFF #51D0FF #8EE1FF #CBF1FF

Accessibility & contrast

On white

1.78

#51D0FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.82

#51D0FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D0FF

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D0FF	#FFFFFF	#000000	##000000
##51D0FF	1.00	1.78	11.82	11.82
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.82	21.00	1.00	1.00
##000000	11.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7CCFF

Deuteranopia (green-blind)

#9FBBFE

Tritanopia (blue-blind)

#00DEDF

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #51d0ff;
/* rgb */ color: rgb(81, 208, 255);
/* oklch */ color: oklch(80.6% 0.128 226.4);

Tailwind

colors: {
  custom: {
    50: '#95deff',
    500: '#51d0ff',
    950: '#000000',
  },
}

SCSS

$custom: #51d0ff;
$custom-light: #95deff;
$custom-dark: #000000;

JSON

{
  "hex": "#51d0ff",
  "rgb": {
    "r": 81,
    "g": 208,
    "b": 255
  },
  "hsl": {
    "h": 196.207,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.80613,
    "c": 0.12824,
    "h": 226.4
  },
  "luminance": 0.54081
}

Semantic roles & 50–950 ramp

primary

#51D0FF

secondary

#D05325

accent

#3E00E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1518

muted

#808486

Preview Lab

Preview with #51D0FF

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

Preview Lab → · Contrast checker → · Palette generator →