#57B5EB#57B5EB

#57B5EB is a light, moderate cyan. Relative luminance 0.411; OKLCH L 73.8% C 0.118 H 236.6°. Best body text is #000000 at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#57B5EB
RGB	rgb(87, 181, 235)
HSL	hsl(202, 79%, 63%)
HSV	hsv(202, 63%, 92%)
CMYK	cmyk(63%, 23%, 0%, 7.8%)
CIE-LAB	lab(70.22, -11.76, -35.23)
CIE-LCH	lch(70.22, 37.14, 251.54°)
OKLab	oklab(73.8% -0.065 -0.0988)
OKLCH	oklch(73.8% 0.118 236.6)
XYZ	xyz(35.4440, 41.0686, 84.6403)
Luminance	0.4107 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B5EB #EB8D57

analogous

#57EBD7 #57B5EB #576BEB

triadic

#57B5EB #EB57B5 #B5EB57

tetradic

#57B5EB #D757EB #EB8D57 #6BEB57

square

#57B5EB #D757EB #EB8D57 #6BEB57

split-complementary

#57B5EB #EB576B #EBD757

monochromatic

#1579B2 #209DE4 #57B5EB #8ECDF2 #C4E5F8

Accessibility & contrast

On white

2.28

#57B5EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.21

#57B5EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B5EB

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B5EB	#FFFFFF	#000000	##000000
##57B5EB	1.00	2.28	9.21	9.21
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.21	21.00	1.00	1.00
##000000	9.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CB4EE

Deuteranopia (green-blind)

#87A5EA

Tritanopia (blue-blind)

#00C3C7

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #57b5eb;
/* rgb */ color: rgb(87, 181, 235);
/* oklch */ color: oklch(73.8% 0.118 236.6);

Tailwind

colors: {
  custom: {
    50: '#94cbf1',
    500: '#57b5eb',
    950: '#000000',
  },
}

SCSS

$custom: #57b5eb;
$custom-light: #94cbf1;
$custom-dark: #000000;

JSON

{
  "hex": "#57b5eb",
  "rgb": {
    "r": 87,
    "g": 181,
    "b": 235
  },
  "hsl": {
    "h": 201.892,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.73805,
    "c": 0.11833,
    "h": 236.6
  },
  "luminance": 0.41072
}

Semantic roles & 50–950 ramp

primary

#57B5EB

secondary

#E9C8B4

accent

#570ADB

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #57B5EB

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

Preview Lab → · Contrast checker → · Palette generator →