#57CBEF#57CBEF

#57CBEF is a light, moderate cyan. Relative luminance 0.510; OKLCH L 79.0% C 0.115 H 221.7°. Best body text is #000000 at 11.19:1 contrast (WCAG AA passes).

Color values

HEX#57CBEF
RGBrgb(87, 203, 239)
HSLhsl(194, 83%, 64%)
HSVhsv(194, 64%, 94%)
CMYKcmyk(63.6%, 15.1%, 0%, 6.3%)
CIE-LABlab(76.66, -22.03, -27.47)
CIE-LCHlch(76.66, 35.21, 231.28°)
OKLaboklab(78.99% -0.086 -0.0766)
OKLCHoklch(78.99% 0.115 221.7)
XYZxyz(40.8601, 50.9658, 89.3286)
Luminance0.5097 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#57CBEF #EF7B57
analogous
#57EFC7 #57CBEF #577FEF
triadic
#57CBEF #EF57CB #CBEF57
tetradic
#57CBEF #C757EF #EF7B57 #7FEF57
square
#57CBEF #C757EF #EF7B57 #7FEF57
split-complementary
#57CBEF #EF577F #EFC757
monochromatic
#1292BA #1FBAEA #57CBEF #8FDCF4 #C7EEFA

Accessibility & contrast

On white

1.88
#57CBEF on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.19
#57CBEF on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57CBEF
11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##57CBEF#FFFFFF#000000##000000
##57CBEF1.001.8811.1911.19
#FFFFFF1.881.0021.0021.00
#00000011.1921.001.001.00
##00000011.1921.001.001.00

Color blindness preview

Protanopia (red-blind)
#B6C6F1
Deuteranopia (green-blind)
#A0B6EF
Tritanopia (blue-blind)
#00D6D6
Achromatopsia (no color)
#BDBDBD

Design tokens & code

CSS
--color: #57cbef;
/* rgb */ color: rgb(87, 203, 239);
/* oklch */ color: oklch(79.0% 0.115 221.7);
Tailwind
colors: {
  custom: {
    50: '#95dbf4',
    500: '#57cbef',
    950: '#000000',
  },
}
SCSS
$custom: #57cbef;
$custom-light: #95dbf4;
$custom-dark: #000000;
JSON
{
  "hex": "#57cbef",
  "rgb": {
    "r": 87,
    "g": 203,
    "b": 239
  },
  "hsl": {
    "h": 194.211,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.78987,
    "c": 0.11517,
    "h": 221.7
  },
  "luminance": 0.5097
}

Semantic roles & 50–950 ramp

primary
#57CBEF
secondary
#B95131
accent
#3A06DF
background
#FCFEFF
surface
#F5FBFE
border
#CFD4D6
text
#0F1517
muted
#808485

Preview Lab

Preview with #57CBEF

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

Preview Lab → · Contrast checker → · Palette generator →

#57CBEF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva