#57B3EE#57B3EE

#57B3EE is a light, vivid cyan. Relative luminance 0.404; OKLCH L 73.5% C 0.122 H 239.6°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#57B3EE
RGB	rgb(87, 179, 238)
HSL	hsl(203, 82%, 64%)
HSV	hsv(203, 63%, 93%)
CMYK	cmyk(63.4%, 24.8%, 0%, 6.7%)
CIE-LAB	lab(69.78, -9.73, -37.56)
CIE-LCH	lch(69.78, 38.80, 255.47°)
OKLab	oklab(73.49% -0.062 -0.1055)
OKLCH	oklch(73.49% 0.122 239.6)
XYZ	xyz(35.4773, 40.4359, 86.8076)
Luminance	0.4044 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B3EE #EE9257

analogous

#57EEDE #57B3EE #5767EE

triadic

#57B3EE #EE57B3 #B3EE57

tetradic

#57B3EE #DE57EE #EE9257 #67EE57

square

#57B3EE #DE57EE #EE9257 #67EE57

split-complementary

#57B3EE #EE5767 #EEDE57

monochromatic

#1377B8 #1F9AE8 #57B3EE #8FCCF4 #C6E5F9

Accessibility & contrast

On white

2.31

#57B3EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.09

#57B3EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B3EE

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B3EE	#FFFFFF	#000000	##000000
##57B3EE	1.00	2.31	9.09	9.09
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.09	21.00	1.00	1.00
##000000	9.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B3F1

Deuteranopia (green-blind)

#83A4ED

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #57b3ee;
/* rgb */ color: rgb(87, 179, 238);
/* oklch */ color: oklch(73.5% 0.122 239.6);

Tailwind

colors: {
  custom: {
    50: '#94c9f3',
    500: '#57b3ee',
    950: '#000000',
  },
}

SCSS

$custom: #57b3ee;
$custom-light: #94c9f3;
$custom-dark: #000000;

JSON

{
  "hex": "#57b3ee",
  "rgb": {
    "r": 87,
    "g": 179,
    "b": 238
  },
  "hsl": {
    "h": 203.444,
    "s": 81.622,
    "l": 63.725
  },
  "oklch": {
    "l": 0.73493,
    "c": 0.12243,
    "h": 239.6
  },
  "luminance": 0.40439
}

Semantic roles & 50–950 ramp

primary

#57B3EE

secondary

#EBCBB6

accent

#5B08DE

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #57B3EE

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

Preview Lab → · Contrast checker → · Palette generator →