#51C4E8#51C4E8

#51C4E8 is a light, moderate cyan. Relative luminance 0.471; OKLCH L 76.9% C 0.114 H 222.0°. Best body text is #000000 at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#51C4E8
RGB	rgb(81, 196, 232)
HSL	hsl(194, 77%, 61%)
HSV	hsv(194, 65%, 91%)
CMYK	cmyk(65.1%, 15.5%, 0%, 9%)
CIE-LAB	lab(74.22, -21.54, -27.45)
CIE-LCH	lch(74.22, 34.90, 231.88°)
OKLab	oklab(76.9% -0.0849 -0.0766)
OKLCH	oklch(76.9% 0.114 222)
XYZ	xyz(37.6929, 47.0513, 83.4236)
Luminance	0.4706 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C4E8 #E87551

analogous

#51E8C1 #51C4E8 #5179E8

triadic

#51C4E8 #E851C4 #C4E851

tetradic

#51C4E8 #C151E8 #E87551 #79E851

square

#51C4E8 #C151E8 #E87551 #79E851

split-complementary

#51C4E8 #E85179 #E8C151

monochromatic

#1686A8 #1DB0DE #51C4E8 #87D6EF #BDE9F6

Accessibility & contrast

On white

2.02

#51C4E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.41

#51C4E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C4E8

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C4E8	#FFFFFF	#000000	##000000
##51C4E8	1.00	2.02	10.41	10.41
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.41	21.00	1.00	1.00
##000000	10.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBFEA

Deuteranopia (green-blind)

#9AB0E8

Tritanopia (blue-blind)

#00CFCF

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #51c4e8;
/* rgb */ color: rgb(81, 196, 232);
/* oklch */ color: oklch(76.9% 0.114 222.0);

Tailwind

colors: {
  custom: {
    50: '#92d6ef',
    500: '#51c4e8',
    950: '#000000',
  },
}

SCSS

$custom: #51c4e8;
$custom-light: #92d6ef;
$custom-dark: #000000;

JSON

{
  "hex": "#51c4e8",
  "rgb": {
    "r": 81,
    "g": 196,
    "b": 232
  },
  "hsl": {
    "h": 194.305,
    "s": 76.65,
    "l": 61.373
  },
  "oklch": {
    "l": 0.76904,
    "c": 0.11433,
    "h": 222
  },
  "luminance": 0.47055
}

Semantic roles & 50–950 ramp

primary

#51C4E8

secondary

#E7BCAE

accent

#3D0DD9

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C4E8

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

Preview Lab → · Contrast checker → · Palette generator →