#51B8CB#51B8CB

#51B8CB is a light, moderate teal. Relative luminance 0.403; OKLCH L 72.9% C 0.098 H 211.6°. Best body text is #000000 at 9.07:1 contrast (WCAG AA passes).

Color values

HEX#51B8CB
RGBrgb(81, 184, 203)
HSLhsl(189, 54%, 56%)
HSVhsv(189, 60%, 80%)
CMYKcmyk(60.1%, 9.4%, 0%, 20.4%)
CIE-LABlab(69.71, -24.13, -18.55)
CIE-LCHlch(69.71, 30.43, 217.55°)
OKLaboklab(72.95% -0.0837 -0.0514)
OKLCHoklch(72.95% 0.098 211.6)
XYZxyz(31.3089, 40.3389, 62.6245)
Luminance0.4034 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51B8CB #CB6451
analogous
#51CBA1 #51B8CB #517BCB
triadic
#51B8CB #CB51B8 #B8CB51
tetradic
#51B8CB #A151CB #CB6451 #7BCB51
square
#51B8CB #A151CB #CB6451 #7BCB51
split-complementary
#51B8CB #CB517B #CBA151
monochromatic
#256F7C #3399AC #51B8CB #80CBD9 #AFDEE7

Accessibility & contrast

On white

2.32
#51B8CB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.07
#51B8CB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B8CB
9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51B8CB#FFFFFF#000000##000000
##51B8CB1.002.329.079.07
#FFFFFF2.321.0021.0021.00
#0000009.0721.001.001.00
##0000009.0721.001.001.00

Color blindness preview

Protanopia (red-blind)
#A9B2CC
Deuteranopia (green-blind)
#96A4CB
Tritanopia (blue-blind)
#00C0BE
Achromatopsia (no color)
#AAAAAA

Design tokens & code

CSS
--color: #51b8cb;
/* rgb */ color: rgb(81, 184, 203);
/* oklch */ color: oklch(72.9% 0.098 211.6);
Tailwind
colors: {
  custom: {
    50: '#8ecdda',
    500: '#51b8cb',
    950: '#000000',
  },
}
SCSS
$custom: #51b8cb;
$custom-light: #8ecdda;
$custom-dark: #000000;
JSON
{
  "hex": "#51b8cb",
  "rgb": {
    "r": 81,
    "g": 184,
    "b": 203
  },
  "hsl": {
    "h": 189.344,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.72948,
    "c": 0.09822,
    "h": 211.6
  },
  "luminance": 0.40342
}

Semantic roles & 50–950 ramp

primary
#51B8CB
secondary
#D5AAA3
accent
#614ADD
background
#F9FCFD
surface
#F2F9FA
border
#CCD2D3
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #51B8CB

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

Preview Lab → · Contrast checker → · Palette generator →

#51B8CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva