#51C3EA#51C3EA

#51C3EA is a light, moderate cyan. Relative luminance 0.467; OKLCH L 76.8% C 0.116 H 224.1°. Best body text is #000000 at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#51C3EA
RGB	rgb(81, 195, 234)
HSL	hsl(195, 78%, 62%)
HSV	hsv(195, 65%, 92%)
CMYK	cmyk(65.4%, 16.7%, 0%, 8.2%)
CIE-LAB	lab(74.01, -20.42, -28.86)
CIE-LCH	lch(74.01, 35.36, 234.72°)
OKLab	oklab(76.76% -0.0831 -0.0806)
OKLCH	oklch(76.76% 0.116 224.1)
XYZ	xyz(37.7537, 46.7160, 84.8534)
Luminance	0.4672 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C3EA #EA7851

analogous

#51EAC5 #51C3EA #5177EA

triadic

#51C3EA #EA51C3 #C3EA51

tetradic

#51C3EA #C551EA #EA7851 #77EA51

square

#51C3EA #C551EA #EA7851 #77EA51

split-complementary

#51C3EA #EA5177 #EAC551

monochromatic

#1585AC #1BB0E2 #51C3EA #88D6F1 #BEE9F7

Accessibility & contrast

On white

2.03

#51C3EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.34

#51C3EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3EA

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C3EA	#FFFFFF	#000000	##000000
##51C3EA	1.00	2.03	10.34	10.34
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.34	21.00	1.00	1.00
##000000	10.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBFEC

Deuteranopia (green-blind)

#98AFEA

Tritanopia (blue-blind)

#00CFD0

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #51c3ea;
/* rgb */ color: rgb(81, 195, 234);
/* oklch */ color: oklch(76.8% 0.116 224.1);

Tailwind

colors: {
  custom: {
    50: '#92d5f0',
    500: '#51c3ea',
    950: '#000000',
  },
}

SCSS

$custom: #51c3ea;
$custom-light: #92d5f0;
$custom-dark: #000000;

JSON

{
  "hex": "#51c3ea",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 234
  },
  "hsl": {
    "h": 195.294,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.76757,
    "c": 0.1158,
    "h": 224.1
  },
  "luminance": 0.4672
}

Semantic roles & 50–950 ramp

primary

#51C3EA

secondary

#E8BEAF

accent

#400BDB

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C3EA

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

Preview Lab → · Contrast checker → · Palette generator →