#57B8EB#57B8EB

#57B8EB is a light, moderate cyan. Relative luminance 0.423; OKLCH L 74.5% C 0.117 H 234.4°. Best body text is #000000 at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#57B8EB
RGB	rgb(87, 184, 235)
HSL	hsl(201, 79%, 63%)
HSV	hsv(201, 63%, 92%)
CMYK	cmyk(63%, 21.7%, 0%, 7.8%)
CIE-LAB	lab(71.08, -13.37, -33.91)
CIE-LCH	lch(71.08, 36.45, 248.48°)
OKLab	oklab(74.48% -0.0681 -0.095)
OKLCH	oklch(74.48% 0.117 234.4)
XYZ	xyz(36.0606, 42.3017, 84.8458)
Luminance	0.4230 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B8EB #EB8A57

analogous

#57EBD4 #57B8EB #576EEB

triadic

#57B8EB #EB57B8 #B8EB57

tetradic

#57B8EB #D457EB #EB8A57 #6EEB57

square

#57B8EB #D457EB #EB8A57 #6EEB57

split-complementary

#57B8EB #EB576E #EBD457

monochromatic

#157CB2 #20A1E4 #57B8EB #8ECFF2 #C4E6F8

Accessibility & contrast

On white

2.22

#57B8EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.46

#57B8EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B8EB

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B8EB	#FFFFFF	#000000	##000000
##57B8EB	1.00	2.22	9.46	9.46
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.46	21.00	1.00	1.00
##000000	9.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB6ED

Deuteranopia (green-blind)

#8BA7EA

Tritanopia (blue-blind)

#00C5C9

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #57b8eb;
/* rgb */ color: rgb(87, 184, 235);
/* oklch */ color: oklch(74.5% 0.117 234.4);

Tailwind

colors: {
  custom: {
    50: '#94cdf1',
    500: '#57b8eb',
    950: '#000000',
  },
}

SCSS

$custom: #57b8eb;
$custom-light: #94cdf1;
$custom-dark: #000000;

JSON

{
  "hex": "#57b8eb",
  "rgb": {
    "r": 87,
    "g": 184,
    "b": 235
  },
  "hsl": {
    "h": 200.676,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.74484,
    "c": 0.11691,
    "h": 234.4
  },
  "luminance": 0.42305
}

Semantic roles & 50–950 ramp

primary

#57B8EB

secondary

#E9C7B4

accent

#520ADB

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #57B8EB

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

Preview Lab → · Contrast checker → · Palette generator →