#57D3EF#57D3EF

#57D3EF is a light, moderate cyan. Relative luminance 0.548; OKLCH L 80.8% C 0.115 H 215.3°. Best body text is #000000 at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#57D3EF
RGB	rgb(87, 211, 239)
HSL	hsl(191, 83%, 64%)
HSV	hsv(191, 64%, 94%)
CMYK	cmyk(63.6%, 11.7%, 0%, 6.3%)
CIE-LAB	lab(78.95, -26.03, -23.97)
CIE-LCH	lch(78.95, 35.39, 222.64°)
OKLab	oklab(80.83% -0.0941 -0.0666)
OKLCH	oklch(80.83% 0.115 215.3)
XYZ	xyz(42.7983, 54.8422, 89.9747)
Luminance	0.5485 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57D3EF #EF7357

analogous

#57EFBF #57D3EF #5787EF

triadic

#57D3EF #EF57D3 #D3EF57

tetradic

#57D3EF #BF57EF #EF7357 #87EF57

square

#57D3EF #BF57EF #EF7357 #87EF57

split-complementary

#57D3EF #EF5787 #EFBF57

monochromatic

#129BBA #1FC4EA #57D3EF #8FE2F4 #C7F0FA

Accessibility & contrast

On white

1.75

#57D3EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.97

#57D3EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57D3EF

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57D3EF	#FFFFFF	#000000	##000000
##57D3EF	1.00	1.75	11.97	11.97
#FFFFFF	1.75	1.00	21.00	21.00
#000000	11.97	21.00	1.00	1.00
##000000	11.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFCDF1

Deuteranopia (green-blind)

#A9BCEF

Tritanopia (blue-blind)

#00DDDC

Achromatopsia (no color)

#C3C3C3

Design tokens & code

CSS

--color: #57d3ef;
/* rgb */ color: rgb(87, 211, 239);
/* oklch */ color: oklch(80.8% 0.115 215.3);

Tailwind

colors: {
  custom: {
    50: '#96e0f4',
    500: '#57d3ef',
    950: '#000000',
  },
}

SCSS

$custom: #57d3ef;
$custom-light: #96e0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#57d3ef",
  "rgb": {
    "r": 87,
    "g": 211,
    "b": 239
  },
  "hsl": {
    "h": 191.053,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.80825,
    "c": 0.11531,
    "h": 215.3
  },
  "luminance": 0.54847
}

Semantic roles & 50–950 ramp

primary

#57D3EF

secondary

#B94A31

accent

#2E06DF

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #57D3EF

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

Preview Lab → · Contrast checker → · Palette generator →