#57A5EB#57A5EB

#57A5EB is a light, vivid cyan. Relative luminance 0.349; OKLCH L 70.2% C 0.129 H 247.8°. Best body text is #000000 at 7.99:1 contrast (WCAG AA passes).

Color values

HEX#57A5EB
RGBrgb(87, 165, 235)
HSLhsl(208, 79%, 63%)
HSVhsv(208, 63%, 92%)
CMYKcmyk(63%, 29.8%, 0%, 7.8%)
CIE-LABlab(65.70, -2.94, -42.30)
CIE-LCHlch(65.70, 42.40, 266.02°)
OKLaboklab(70.23% -0.0487 -0.1194)
OKLCHoklch(70.23% 0.129 247.8)
XYZxyz(32.3755, 34.9315, 83.6174)
Luminance0.3493 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#57A5EB #EB9D57
analogous
#57EBE7 #57A5EB #575BEB
triadic
#57A5EB #EB57A5 #A5EB57
tetradic
#57A5EB #E757EB #EB9D57 #5BEB57
square
#57A5EB #E757EB #EB9D57 #5BEB57
split-complementary
#57A5EB #EB575B #EBE757
monochromatic
#1568B2 #2088E4 #57A5EB #8EC2F2 #C4E0F8

Accessibility & contrast

On white

2.63
#57A5EB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.99
#57A5EB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57A5EB
7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##57A5EB#FFFFFF#000000##000000
##57A5EB1.002.637.997.99
#FFFFFF2.631.0021.0021.00
#0000007.9921.001.001.00
##0000007.9921.001.001.00

Color blindness preview

Protanopia (red-blind)
#87A8EE
Deuteranopia (green-blind)
#7299EA
Tritanopia (blue-blind)
#00B6BE
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #57a5eb;
/* rgb */ color: rgb(87, 165, 235);
/* oklch */ color: oklch(70.2% 0.129 247.8);
Tailwind
colors: {
  custom: {
    50: '#93bff1',
    500: '#57a5eb',
    950: '#000000',
  },
}
SCSS
$custom: #57a5eb;
$custom-light: #93bff1;
$custom-dark: #000000;
JSON
{
  "hex": "#57a5eb",
  "rgb": {
    "r": 87,
    "g": 165,
    "b": 235
  },
  "hsl": {
    "h": 208.378,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.70225,
    "c": 0.12893,
    "h": 247.8
  },
  "luminance": 0.34935
}

Semantic roles & 50–950 ramp

primary
#57A5EB
secondary
#E9CDB4
accent
#6D0ADB
background
#F9FBFE
surface
#F2F7FD
border
#CCD0D5
text
#0E1217
muted
#7E8185

Preview Lab

Preview with #57A5EB

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

Preview Lab → · Contrast checker → · Palette generator →

#57A5EB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva