#51B2CB#51B2CB

#51B2CB is a light, moderate cyan. Relative luminance 0.379; OKLCH L 71.5% C 0.097 H 217.3°. Best body text is #000000 at 8.58:1 contrast (WCAG AA passes).

Color values

HEX#51B2CB
RGBrgb(81, 178, 203)
HSLhsl(192, 54%, 56%)
HSVhsv(192, 60%, 80%)
CMYKcmyk(60.1%, 12.3%, 0%, 20.4%)
CIE-LABlab(67.95, -21.07, -21.23)
CIE-LCHlch(67.95, 29.91, 225.22°)
OKLaboklab(71.53% -0.0773 -0.059)
OKLCHoklch(71.53% 0.097 217.3)
XYZxyz(30.0889, 37.8989, 62.2179)
Luminance0.3790 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51B2CB #CB6A51
analogous
#51CBA7 #51B2CB #5175CB
triadic
#51B2CB #CB51B2 #B2CB51
tetradic
#51B2CB #A751CB #CB6A51 #75CB51
square
#51B2CB #A751CB #CB6A51 #75CB51
split-complementary
#51B2CB #CB5175 #CBA751
monochromatic
#256B7C #3393AC #51B2CB #80C7D9 #AFDCE7

Accessibility & contrast

On white

2.45
#51B2CB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.58
#51B2CB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B2CB
8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51B2CB#FFFFFF#000000##000000
##51B2CB1.002.458.588.58
#FFFFFF2.451.0021.0021.00
#0000008.5821.001.001.00
##0000008.5821.001.001.00

Color blindness preview

Protanopia (red-blind)
#A1ADCC
Deuteranopia (green-blind)
#90A0CB
Tritanopia (blue-blind)
#00BBBA
Achromatopsia (no color)
#A6A6A6

Design tokens & code

CSS
--color: #51b2cb;
/* rgb */ color: rgb(81, 178, 203);
/* oklch */ color: oklch(71.5% 0.097 217.3);
Tailwind
colors: {
  custom: {
    50: '#8dc9da',
    500: '#51b2cb',
    950: '#000000',
  },
}
SCSS
$custom: #51b2cb;
$custom-light: #8dc9da;
$custom-dark: #000000;
JSON
{
  "hex": "#51b2cb",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 203
  },
  "hsl": {
    "h": 192.295,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.71532,
    "c": 0.0972,
    "h": 217.3
  },
  "luminance": 0.37902
}

Semantic roles & 50–950 ramp

primary
#51B2CB
secondary
#D5ADA3
accent
#694ADD
background
#F9FCFD
surface
#F1F8FA
border
#CBD1D3
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #51B2CB

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

Preview Lab → · Contrast checker → · Palette generator →

#51B2CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva