#51A8D6#51A8D6

#51A8D6 is a light, moderate cyan. Relative luminance 0.346; OKLCH L 69.7% C 0.107 H 234.3°. Best body text is #000000 at 7.92:1 contrast (WCAG AA passes).

Color values

HEX#51A8D6
RGBrgb(81, 168, 214)
HSLhsl(201, 62%, 58%)
HSVhsv(201, 62%, 84%)
CMYKcmyk(62.1%, 21.5%, 0%, 16.1%)
CIE-LABlab(65.44, -12.40, -31.15)
CIE-LCHlch(65.44, 33.52, 248.29°)
OKLaboklab(69.67% -0.0626 -0.0872)
OKLCHoklch(69.67% 0.107 234.3)
XYZxyz(29.5289, 34.6067, 68.7289)
Luminance0.3461 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51A8D6 #D67F51
analogous
#51D6C1 #51A8D6 #5165D6
triadic
#51A8D6 #D651A8 #A8D651
tetradic
#51A8D6 #C151D6 #D67F51 #65D651
square
#51A8D6 #C151D6 #D67F51 #65D651
split-complementary
#51A8D6 #D65165 #D6C151
monochromatic
#21678C #2D8BBD #51A8D6 #83C1E2 #B4DAED

Accessibility & contrast

On white

2.65
#51A8D6 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.92
#51A8D6 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A8D6
7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51A8D6#FFFFFF#000000##000000
##51A8D61.002.657.927.92
#FFFFFF2.651.0021.0021.00
#0000007.9221.001.001.00
##0000007.9221.001.001.00

Color blindness preview

Protanopia (red-blind)
#92A7D8
Deuteranopia (green-blind)
#7F99D5
Tritanopia (blue-blind)
#00B4B7
Achromatopsia (no color)
#9F9F9F

Design tokens & code

CSS
--color: #51a8d6;
/* rgb */ color: rgb(81, 168, 214);
/* oklch */ color: oklch(69.7% 0.107 234.3);
Tailwind
colors: {
  custom: {
    50: '#8ec1e2',
    500: '#51a8d6',
    950: '#000000',
  },
}
SCSS
$custom: #51a8d6;
$custom-light: #8ec1e2;
$custom-dark: #000000;
JSON
{
  "hex": "#51a8d6",
  "rgb": {
    "r": 81,
    "g": 168,
    "b": 214
  },
  "hsl": {
    "h": 200.752,
    "s": 61.86,
    "l": 57.843
  },
  "oklch": {
    "l": 0.69669,
    "c": 0.10735,
    "h": 234.3
  },
  "luminance": 0.3461
}

Semantic roles & 50–950 ramp

primary
#51A8D6
secondary
#DCB9A7
accent
#7B43E5
background
#F9FBFD
surface
#F2F7FB
border
#CCD0D4
text
#0D1215
muted
#7E8183

Preview Lab

Preview with #51A8D6

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

Preview Lab → · Contrast checker → · Palette generator →

#51A8D6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva