#51B0CD#51B0CD

#51B0CD is a light, moderate cyan. Relative luminance 0.372; OKLCH L 71.1% C 0.098 H 220.9°. Best body text is #000000 at 8.44:1 contrast (WCAG AA passes).

Color values

HEX#51B0CD
RGBrgb(81, 176, 205)
HSLhsl(194, 55%, 56%)
HSVhsv(194, 60%, 80%)
CMYKcmyk(60.5%, 14.1%, 0%, 19.6%)
CIE-LABlab(67.43, -19.43, -23.12)
CIE-LCHlch(67.43, 30.20, 229.95°)
OKLaboklab(71.14% -0.0744 -0.0643)
OKLCHoklch(71.14% 0.098 220.9)
XYZxyz(29.9337, 37.2048, 63.3495)
Luminance0.3721 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51B0CD #CD6E51
analogous
#51CDAC #51B0CD #5172CD
triadic
#51B0CD #CD51B0 #B0CD51
tetradic
#51B0CD #AC51CD #CD6E51 #72CD51
square
#51B0CD #AC51CD #CD6E51 #72CD51
split-complementary
#51B0CD #CD5172 #CDAC51
monochromatic
#256A7F #3292AF #51B0CD #81C6DB #B0DBE8

Accessibility & contrast

On white

2.49
#51B0CD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.44
#51B0CD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B0CD
8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51B0CD#FFFFFF#000000##000000
##51B0CD1.002.498.448.44
#FFFFFF2.491.0021.0021.00
#0000008.4421.001.001.00
##0000008.4421.001.001.00

Color blindness preview

Protanopia (red-blind)
#9FACCF
Deuteranopia (green-blind)
#8D9ECD
Tritanopia (blue-blind)
#00B9B9
Achromatopsia (no color)
#A4A4A4

Design tokens & code

CSS
--color: #51b0cd;
/* rgb */ color: rgb(81, 176, 205);
/* oklch */ color: oklch(71.1% 0.098 220.9);
Tailwind
colors: {
  custom: {
    50: '#8dc7dc',
    500: '#51b0cd',
    950: '#000000',
  },
}
SCSS
$custom: #51b0cd;
$custom-light: #8dc7dc;
$custom-dark: #000000;
JSON
{
  "hex": "#51b0cd",
  "rgb": {
    "r": 81,
    "g": 176,
    "b": 205
  },
  "hsl": {
    "h": 194.032,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.71142,
    "c": 0.09831,
    "h": 220.9
  },
  "luminance": 0.37208
}

Semantic roles & 50–950 ramp

primary
#51B0CD
secondary
#D7AFA3
accent
#6C49DF
background
#F9FCFD
surface
#F1F8FB
border
#CBD1D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #51B0CD

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

Preview Lab → · Contrast checker → · Palette generator →

#51B0CD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva