#51A3DC#51A3DC

#51A3DC is a light, moderate cyan. Relative luminance 0.331; OKLCH L 68.8% C 0.116 H 241.5°. Best body text is #000000 at 7.62:1 contrast (WCAG AA passes).

Color values

HEX#51A3DC
RGBrgb(81, 163, 220)
HSLhsl(205, 67%, 59%)
HSVhsv(205, 63%, 86%)
CMYKcmyk(63.2%, 25.9%, 0%, 13.7%)
CIE-LABlab(64.25, -7.74, -36.32)
CIE-LCHlch(64.25, 37.13, 257.98°)
OKLaboklab(68.81% -0.0554 -0.1021)
OKLCHoklch(68.81% 0.116 241.5)
XYZxyz(29.4039, 33.1081, 72.5372)
Luminance0.3311 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51A3DC #DC8A51
analogous
#51DCCF #51A3DC #515EDC
triadic
#51A3DC #DC51A3 #A3DC51
tetradic
#51A3DC #CF51DC #DC8A51 #5EDC51
square
#51A3DC #CF51DC #DC8A51 #5EDC51
split-complementary
#51A3DC #DC515E #DCCF51
monochromatic
#1E6495 #2886C8 #51A3DC #84BEE6 #B7D9F0

Accessibility & contrast

On white

2.76
#51A3DC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.62
#51A3DC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A3DC
7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51A3DC#FFFFFF#000000##000000
##51A3DC1.002.767.627.62
#FFFFFF2.761.0021.0021.00
#0000007.6221.001.001.00
##0000007.6221.001.001.00

Color blindness preview

Protanopia (red-blind)
#89A3DF
Deuteranopia (green-blind)
#7696DB
Tritanopia (blue-blind)
#00B1B7
Achromatopsia (no color)
#9C9C9C

Design tokens & code

CSS
--color: #51a3dc;
/* rgb */ color: rgb(81, 163, 220);
/* oklch */ color: oklch(68.8% 0.116 241.5);
Tailwind
colors: {
  custom: {
    50: '#8fbee7',
    500: '#51a3dc',
    950: '#000000',
  },
}
SCSS
$custom: #51a3dc;
$custom-light: #8fbee7;
$custom-dark: #000000;
JSON
{
  "hex": "#51a3dc",
  "rgb": {
    "r": 81,
    "g": 163,
    "b": 220
  },
  "hsl": {
    "h": 204.604,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.68805,
    "c": 0.11617,
    "h": 241.5
  },
  "luminance": 0.33111
}

Semantic roles & 50–950 ramp

primary
#51A3DC
secondary
#E0BFA9
accent
#853EE9
background
#F9FBFE
surface
#F2F6FC
border
#CCD0D5
text
#0D1216
muted
#7E8184

Preview Lab

Preview with #51A3DC

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

Preview Lab → · Contrast checker → · Palette generator →

#51A3DC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva