#57B5EE#57B5EE

#57B5EE is a light, vivid cyan. Relative luminance 0.412; OKLCH L 73.9% C 0.121 H 238.1°. Best body text is #000000 at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#57B5EE
RGB	rgb(87, 181, 238)
HSL	hsl(203, 82%, 64%)
HSV	hsv(203, 63%, 93%)
CMYK	cmyk(63.4%, 23.9%, 0%, 6.7%)
CIE-LAB	lab(70.35, -10.82, -36.67)
CIE-LCH	lch(70.35, 38.24, 253.57°)
OKLab	oklab(73.94% -0.0641 -0.103)
OKLCH	oklch(73.94% 0.121 238.1)
XYZ	xyz(35.8811, 41.2434, 86.9422)
Luminance	0.4125 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B5EE #EE9057

analogous

#57EEDB #57B5EE #5769EE

triadic

#57B5EE #EE57B5 #B5EE57

tetradic

#57B5EE #DB57EE #EE9057 #69EE57

square

#57B5EE #DB57EE #EE9057 #69EE57

split-complementary

#57B5EE #EE5769 #EEDB57

monochromatic

#137AB8 #1F9DE8 #57B5EE #8FCDF4 #C6E6F9

Accessibility & contrast

On white

2.27

#57B5EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.25

#57B5EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B5EE

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B5EE	#FFFFFF	#000000	##000000
##57B5EE	1.00	2.27	9.25	9.25
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.25	21.00	1.00	1.00
##000000	9.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB4F1

Deuteranopia (green-blind)

#86A5ED

Tritanopia (blue-blind)

#00C3C8

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #57b5ee;
/* rgb */ color: rgb(87, 181, 238);
/* oklch */ color: oklch(73.9% 0.121 238.1);

Tailwind

colors: {
  custom: {
    50: '#94cbf3',
    500: '#57b5ee',
    950: '#000000',
  },
}

SCSS

$custom: #57b5ee;
$custom-light: #94cbf3;
$custom-dark: #000000;

JSON

{
  "hex": "#57b5ee",
  "rgb": {
    "r": 87,
    "g": 181,
    "b": 238
  },
  "hsl": {
    "h": 202.649,
    "s": 81.622,
    "l": 63.725
  },
  "oklch": {
    "l": 0.73942,
    "c": 0.12129,
    "h": 238.1
  },
  "luminance": 0.41247
}

Semantic roles & 50–950 ramp

primary

#57B5EE

secondary

#EBCAB6

accent

#5808DE

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #57B5EE

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

Preview Lab → · Contrast checker → · Palette generator →