#51CDEE#51CDEE

#51CDEE is a light, moderate cyan. Relative luminance 0.516; OKLCH L 79.2% C 0.117 H 218.7°. Best body text is #000000 at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#51CDEE
RGB	rgb(81, 205, 238)
HSL	hsl(193, 82%, 63%)
HSV	hsv(193, 66%, 93%)
CMYK	cmyk(66%, 13.9%, 0%, 6.7%)
CIE-LAB	lab(77.03, -24.27, -26.38)
CIE-LCH	lch(77.03, 35.85, 227.39°)
OKLab	oklab(79.23% -0.0916 -0.0735)
OKLCH	oklch(79.23% 0.117 218.7)
XYZ	xyz(40.6509, 51.5806, 88.6860)
Luminance	0.5159 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CDEE #EE7251

analogous

#51EEC0 #51CDEE #517FEE

triadic

#51CDEE #EE51CD #CDEE51

tetradic

#51CDEE #C051EE #EE7251 #7FEE51

square

#51CDEE #C051EE #EE7251 #7FEE51

split-complementary

#51CDEE #EE517F #EEC051

monochromatic

#1191B3 #19BDE9 #51CDEE #89DDF3 #C1EDF9

Accessibility & contrast

On white

1.86

#51CDEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.32

#51CDEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CDEE

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CDEE	#FFFFFF	#000000	##000000
##51CDEE	1.00	1.86	11.32	11.32
#FFFFFF	1.86	1.00	21.00	21.00
#000000	11.32	21.00	1.00	1.00
##000000	11.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C7F0

Deuteranopia (green-blind)

#A2B7EE

Tritanopia (blue-blind)

#00D8D7

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51cdee;
/* rgb */ color: rgb(81, 205, 238);
/* oklch */ color: oklch(79.2% 0.117 218.7);

Tailwind

colors: {
  custom: {
    50: '#93dcf3',
    500: '#51cdee',
    950: '#000000',
  },
}

SCSS

$custom: #51cdee;
$custom-light: #93dcf3;
$custom-dark: #000000;

JSON

{
  "hex": "#51cdee",
  "rgb": {
    "r": 81,
    "g": 205,
    "b": 238
  },
  "hsl": {
    "h": 192.611,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.79226,
    "c": 0.11749,
    "h": 218.7
  },
  "luminance": 0.51585
}

Semantic roles & 50–950 ramp

primary

#51CDEE

secondary

#B34C30

accent

#3407DF

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #51CDEE

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

Preview Lab → · Contrast checker → · Palette generator →