#51CAF2#51CAF2

#51CAF2 is a light, vivid cyan. Relative luminance 0.504; OKLCH L 78.7% C 0.120 H 223.5°. Best body text is #000000 at 11.08:1 contrast (WCAG AA passes).

Color values

HEX#51CAF2
RGBrgb(81, 202, 242)
HSLhsl(195, 86%, 63%)
HSVhsv(195, 67%, 95%)
CMYKcmyk(66.5%, 16.5%, 0%, 5.1%)
CIE-LABlab(76.31, -21.54, -29.63)
CIE-LCHlch(76.31, 36.63, 233.98°)
OKLaboklab(78.7% -0.0872 -0.0827)
OKLCHoklch(78.7% 0.12 223.5)
XYZxyz(40.5344, 50.3968, 91.5785)
Luminance0.5040 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51CAF2 #F27951
analogous
#51F2C9 #51CAF2 #5179F2
triadic
#51CAF2 #F251CA #CAF251
tetradic
#51CAF2 #C951F2 #F27951 #79F251
square
#51CAF2 #C951F2 #F27951 #79F251
split-complementary
#51CAF2 #F25179 #F2C951
monochromatic
#0E90BB #18B9EE #51CAF2 #8ADBF6 #C3EDFB

Accessibility & contrast

On white

1.90
#51CAF2 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.08
#51CAF2 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CAF2
11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51CAF2#FFFFFF#000000##000000
##51CAF21.001.9011.0811.08
#FFFFFF1.901.0021.0021.00
#00000011.0821.001.001.00
##00000011.0821.001.001.00

Color blindness preview

Protanopia (red-blind)
#B3C6F4
Deuteranopia (green-blind)
#9DB5F2
Tritanopia (blue-blind)
#00D6D7
Achromatopsia (no color)
#BCBCBC

Design tokens & code

CSS
--color: #51caf2;
/* rgb */ color: rgb(81, 202, 242);
/* oklch */ color: oklch(78.7% 0.120 223.5);
Tailwind
colors: {
  custom: {
    50: '#93daf6',
    500: '#51caf2',
    950: '#000000',
  },
}
SCSS
$custom: #51caf2;
$custom-light: #93daf6;
$custom-dark: #000000;
JSON
{
  "hex": "#51caf2",
  "rgb": {
    "r": 81,
    "g": 202,
    "b": 242
  },
  "hsl": {
    "h": 194.907,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.78698,
    "c": 0.12021,
    "h": 223.5
  },
  "luminance": 0.50401
}

Semantic roles & 50–950 ramp

primary
#51CAF2
secondary
#B9512E
accent
#3A03E3
background
#FCFEFF
surface
#F5FBFE
border
#CFD4D6
text
#0E1417
muted
#7F8385

Preview Lab

Preview with #51CAF2

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

Preview Lab → · Contrast checker → · Palette generator →

#51CAF2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva