#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
RGBrgb(81, 195, 234)
HSLhsl(195, 78%, 62%)
HSVhsv(195, 65%, 92%)
CMYKcmyk(65.4%, 16.7%, 0%, 8.2%)
CIE-LABlab(74.01, -20.42, -28.86)
CIE-LCHlch(74.01, 35.36, 234.72°)
OKLaboklab(76.76% -0.0831 -0.0806)
OKLCHoklch(76.76% 0.116 224.1)
XYZxyz(37.7537, 46.7160, 84.8534)
Luminance0.4672 (WCAG relative)
Temperaturecool
Familycyan

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
##51C3EA1.002.0310.3410.34
#FFFFFF2.031.0021.0021.00
#00000010.3421.001.001.00
##00000010.3421.001.001.00

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 →

#51C3EA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva