#51CBEE#51CBEE

#51CBEE is a light, moderate cyan. Relative luminance 0.506; OKLCH L 78.8% C 0.118 H 220.3°. Best body text is #000000 at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#51CBEE
RGB	rgb(81, 203, 238)
HSL	hsl(193, 82%, 63%)
HSV	hsv(193, 66%, 93%)
CMYK	cmyk(66%, 14.7%, 0%, 6.7%)
CIE-LAB	lab(76.45, -23.27, -27.26)
CIE-LCH	lch(76.45, 35.84, 229.52°)
OKLab	oklab(78.76% -0.0897 -0.076)
OKLCH	oklch(78.76% 0.118 220.3)
XYZ	xyz(40.1756, 50.6299, 88.5276)
Luminance	0.5063 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CBEE #EE7451

analogous

#51EEC3 #51CBEE #517CEE

triadic

#51CBEE #EE51CB #CBEE51

tetradic

#51CBEE #C351EE #EE7451 #7CEE51

square

#51CBEE #C351EE #EE7451 #7CEE51

split-complementary

#51CBEE #EE517C #EEC351

monochromatic

#118FB3 #19BAE9 #51CBEE #89DCF3 #C1ECF9

Accessibility & contrast

On white

1.89

#51CBEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.13

#51CBEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBEE

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CBEE	#FFFFFF	#000000	##000000
##51CBEE	1.00	1.89	11.13	11.13
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.13	21.00	1.00	1.00
##000000	11.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6C6F0

Deuteranopia (green-blind)

#A0B6EE

Tritanopia (blue-blind)

#00D6D6

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cbee;
/* rgb */ color: rgb(81, 203, 238);
/* oklch */ color: oklch(78.8% 0.118 220.3);

Tailwind

colors: {
  custom: {
    50: '#93dbf3',
    500: '#51cbee',
    950: '#000000',
  },
}

SCSS

$custom: #51cbee;
$custom-light: #93dbf3;
$custom-dark: #000000;

JSON

{
  "hex": "#51cbee",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 238
  },
  "hsl": {
    "h": 193.376,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.78764,
    "c": 0.11755,
    "h": 220.3
  },
  "luminance": 0.50634
}

Semantic roles & 50–950 ramp

primary

#51CBEE

secondary

#B34D30

accent

#3707DF

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #51CBEE

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

Preview Lab → · Contrast checker → · Palette generator →