#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
RGB	rgb(87, 165, 235)
HSL	hsl(208, 79%, 63%)
HSV	hsv(208, 63%, 92%)
CMYK	cmyk(63%, 29.8%, 0%, 7.8%)
CIE-LAB	lab(65.70, -2.94, -42.30)
CIE-LCH	lch(65.70, 42.40, 266.02°)
OKLab	oklab(70.23% -0.0487 -0.1194)
OKLCH	oklch(70.23% 0.129 247.8)
XYZ	xyz(32.3755, 34.9315, 83.6174)
Luminance	0.3493 (WCAG relative)
Temperature	cool
Family	cyan

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
##57A5EB	1.00	2.63	7.99	7.99
#FFFFFF	2.63	1.00	21.00	21.00
#000000	7.99	21.00	1.00	1.00
##000000	7.99	21.00	1.00	1.00

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 →