#51A7CD#51A7CD

#51A7CD is a light, moderate cyan. Relative luminance 0.338; OKLCH L 69.0% C 0.100 H 229.5°. Best body text is #000000 at 7.76:1 contrast (WCAG AA passes).

Color values

HEX#51A7CD
RGBrgb(81, 167, 205)
HSLhsl(198, 55%, 56%)
HSVhsv(198, 60%, 80%)
CMYKcmyk(60.5%, 18.5%, 0%, 19.6%)
CIE-LABlab(64.80, -14.67, -27.16)
CIE-LCHlch(64.80, 30.87, 241.62°)
OKLaboklab(69.04% -0.0647 -0.0758)
OKLCHoklch(69.04% 0.1 229.5)
XYZxyz(28.2272, 33.7918, 62.7807)
Luminance0.3379 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51A7CD #CD7751
analogous
#51CDB5 #51A7CD #5169CD
triadic
#51A7CD #CD51A7 #A7CD51
tetradic
#51A7CD #B551CD #CD7751 #69CD51
square
#51A7CD #B551CD #CD7751 #69CD51
split-complementary
#51A7CD #CD5169 #CDB551
monochromatic
#25637F #3288AF #51A7CD #81BFDB #B0D7E8

Accessibility & contrast

On white

2.71
#51A7CD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.76
#51A7CD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A7CD
7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51A7CD#FFFFFF#000000##000000
##51A7CD1.002.717.767.76
#FFFFFF2.711.0021.0021.00
#0000007.7621.001.001.00
##0000007.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#94A5CF
Deuteranopia (green-blind)
#8298CC
Tritanopia (blue-blind)
#00B2B3
Achromatopsia (no color)
#9D9D9D

Design tokens & code

CSS
--color: #51a7cd;
/* rgb */ color: rgb(81, 167, 205);
/* oklch */ color: oklch(69.0% 0.100 229.5);
Tailwind
colors: {
  custom: {
    50: '#8dc1dc',
    500: '#51a7cd',
    950: '#000000',
  },
}
SCSS
$custom: #51a7cd;
$custom-light: #8dc1dc;
$custom-dark: #000000;
JSON
{
  "hex": "#51a7cd",
  "rgb": {
    "r": 81,
    "g": 167,
    "b": 205
  },
  "hsl": {
    "h": 198.387,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.69039,
    "c": 0.09968,
    "h": 229.5
  },
  "luminance": 0.33795
}

Semantic roles & 50–950 ramp

primary
#51A7CD
secondary
#D7B3A3
accent
#7749DF
background
#F9FBFD
surface
#F1F7FB
border
#CBD0D4
text
#0D1215
muted
#7E8183

Preview Lab

Preview with #51A7CD

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

Preview Lab → · Contrast checker → · Palette generator →

#51A7CD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva