#51CEF0#51CEF0

#51CEF0 is a light, moderate cyan. Relative luminance 0.522; OKLCH L 79.5% C 0.119 H 219.2°. Best body text is #000000 at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#51CEF0
RGB	rgb(81, 206, 240)
HSL	hsl(193, 84%, 63%)
HSV	hsv(193, 66%, 94%)
CMYK	cmyk(66.3%, 14.2%, 0%, 5.9%)
CIE-LAB	lab(77.39, -24.17, -26.91)
CIE-LCH	lch(77.39, 36.17, 228.07°)
OKLab	oklab(79.54% -0.0919 -0.075)
OKLCH	oklch(79.54% 0.119 219.2)
XYZ	xyz(41.1864, 52.1787, 90.3221)
Luminance	0.5218 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CEF0 #F07351

analogous

#51F0C2 #51CEF0 #517EF0

triadic

#51CEF0 #F051CE #CEF051

tetradic

#51CEF0 #C251F0 #F07351 #7EF051

square

#51CEF0 #C251F0 #F07351 #7EF051

split-complementary

#51CEF0 #F0517E #F0C251

monochromatic

#1093B7 #19BEEB #51CEF0 #89DEF5 #C2EEFA

Accessibility & contrast

On white

1.84

#51CEF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.44

#51CEF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CEF0

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CEF0	#FFFFFF	#000000	##000000
##51CEF0	1.00	1.84	11.44	11.44
#FFFFFF	1.84	1.00	21.00	21.00
#000000	11.44	21.00	1.00	1.00
##000000	11.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9C9F2

Deuteranopia (green-blind)

#A2B8F0

Tritanopia (blue-blind)

#00D9D9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #51cef0;
/* rgb */ color: rgb(81, 206, 240);
/* oklch */ color: oklch(79.5% 0.119 219.2);

Tailwind

colors: {
  custom: {
    50: '#93ddf5',
    500: '#51cef0',
    950: '#000000',
  },
}

SCSS

$custom: #51cef0;
$custom-light: #93ddf5;
$custom-dark: #000000;

JSON

{
  "hex": "#51cef0",
  "rgb": {
    "r": 81,
    "g": 206,
    "b": 240
  },
  "hsl": {
    "h": 192.83,
    "s": 84.127,
    "l": 62.941
  },
  "oklch": {
    "l": 0.79536,
    "c": 0.11861,
    "h": 219.2
  },
  "luminance": 0.52183
}

Semantic roles & 50–950 ramp

primary

#51CEF0

secondary

#B64C2F

accent

#3405E1

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #51CEF0

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

Preview Lab → · Contrast checker → · Palette generator →