#51C6EA#51C6EA

#51C6EA is a light, moderate cyan. Relative luminance 0.481; OKLCH L 77.4% C 0.115 H 221.7°. Best body text is #000000 at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#51C6EA
RGB	rgb(81, 198, 234)
HSL	hsl(194, 78%, 62%)
HSV	hsv(194, 65%, 92%)
CMYK	cmyk(65.4%, 15.4%, 0%, 8.2%)
CIE-LAB	lab(74.87, -21.95, -27.54)
CIE-LCH	lch(74.87, 35.22, 231.44°)
OKLab	oklab(77.45% -0.0862 -0.0768)
OKLCH	oklch(77.45% 0.115 221.7)
XYZ	xyz(38.4327, 48.0739, 85.0797)
Luminance	0.4808 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C6EA #EA7551

analogous

#51EAC2 #51C6EA #5179EA

triadic

#51C6EA #EA51C6 #C6EA51

tetradic

#51C6EA #C251EA #EA7551 #79EA51

square

#51C6EA #C251EA #EA7551 #79EA51

split-complementary

#51C6EA #EA5179 #EAC251

monochromatic

#1588AC #1BB4E2 #51C6EA #88D8F1 #BEEAF7

Accessibility & contrast

On white

1.98

#51C6EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.62

#51C6EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C6EA

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C6EA	#FFFFFF	#000000	##000000
##51C6EA	1.00	1.98	10.62	10.62
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.62	21.00	1.00	1.00
##000000	10.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C1EC

Deuteranopia (green-blind)

#9BB1EA

Tritanopia (blue-blind)

#00D1D1

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #51c6ea;
/* rgb */ color: rgb(81, 198, 234);
/* oklch */ color: oklch(77.4% 0.115 221.7);

Tailwind

colors: {
  custom: {
    50: '#92d7f0',
    500: '#51c6ea',
    950: '#000000',
  },
}

SCSS

$custom: #51c6ea;
$custom-light: #92d7f0;
$custom-dark: #000000;

JSON

{
  "hex": "#51c6ea",
  "rgb": {
    "r": 81,
    "g": 198,
    "b": 234
  },
  "hsl": {
    "h": 194.118,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.77448,
    "c": 0.11543,
    "h": 221.7
  },
  "luminance": 0.48078
}

Semantic roles & 50–950 ramp

primary

#51C6EA

secondary

#E8BCAF

accent

#3C0BDB

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C6EA

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

Preview Lab → · Contrast checker → · Palette generator →