#51C6EE#51C6EE

#51C6EE is a light, moderate cyan. Relative luminance 0.483; OKLCH L 77.6% C 0.118 H 224.2°. Best body text is #000000 at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#51C6EE
RGB	rgb(81, 198, 238)
HSL	hsl(195, 82%, 63%)
HSV	hsv(195, 66%, 93%)
CMYK	cmyk(66%, 16.8%, 0%, 6.7%)
CIE-LAB	lab(75.02, -20.73, -29.47)
CIE-LCH	lch(75.02, 36.03, 234.88°)
OKLab	oklab(77.61% -0.0847 -0.0823)
OKLCH	oklch(77.61% 0.118 224.2)
XYZ	xyz(39.0138, 48.3063, 88.1403)
Luminance	0.4831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C6EE #EE7951

analogous

#51EEC8 #51C6EE #5177EE

triadic

#51C6EE #EE51C6 #C6EE51

tetradic

#51C6EE #C851EE #EE7951 #77EE51

square

#51C6EE #C851EE #EE7951 #77EE51

split-complementary

#51C6EE #EE5177 #EEC851

monochromatic

#118AB3 #19B4E9 #51C6EE #89D8F3 #C1EBF9

Accessibility & contrast

On white

1.97

#51C6EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.66

#51C6EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C6EE

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C6EE	#FFFFFF	#000000	##000000
##51C6EE	1.00	1.97	10.66	10.66
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.66	21.00	1.00	1.00
##000000	10.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0C2F0

Deuteranopia (green-blind)

#9AB2EE

Tritanopia (blue-blind)

#00D2D3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #51c6ee;
/* rgb */ color: rgb(81, 198, 238);
/* oklch */ color: oklch(77.6% 0.118 224.2);

Tailwind

colors: {
  custom: {
    50: '#92d7f3',
    500: '#51c6ee',
    950: '#000000',
  },
}

SCSS

$custom: #51c6ee;
$custom-light: #92d7f3;
$custom-dark: #000000;

JSON

{
  "hex": "#51c6ee",
  "rgb": {
    "r": 81,
    "g": 198,
    "b": 238
  },
  "hsl": {
    "h": 195.287,
    "s": 82.199,
    "l": 62.549
  },
  "oklch": {
    "l": 0.77614,
    "c": 0.11809,
    "h": 224.2
  },
  "luminance": 0.48311
}

Semantic roles & 50–950 ramp

primary

#51C6EE

secondary

#EABFB1

accent

#3E07DF

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #51C6EE

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

Preview Lab → · Contrast checker → · Palette generator →