#57B1E7#57B1E7

#57B1E7 is a light, moderate cyan. Relative luminance 0.392; OKLCH L 72.7% C 0.116 H 237.7°. Best body text is #000000 at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#57B1E7
RGB	rgb(87, 177, 231)
HSL	hsl(203, 75%, 62%)
HSV	hsv(203, 62%, 91%)
CMYK	cmyk(62.3%, 23.4%, 0%, 9.4%)
CIE-LAB	lab(68.92, -10.86, -35.07)
CIE-LCH	lch(68.92, 36.72, 252.79°)
OKLab	oklab(72.72% -0.0623 -0.0984)
OKLCH	oklch(72.72% 0.116 237.7)
XYZ	xyz(34.0709, 39.2366, 81.3637)
Luminance	0.3924 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B1E7 #E78D57

analogous

#57E7D5 #57B1E7 #5769E7

triadic

#57B1E7 #E757B1 #B1E757

tetradic

#57B1E7 #D557E7 #E78D57 #69E757

square

#57B1E7 #D557E7 #E78D57 #69E757

split-complementary

#57B1E7 #E75769 #E7D557

monochromatic

#1874AB #2198DF #57B1E7 #8DCAEF #C2E3F6

Accessibility & contrast

On white

2.37

#57B1E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.85

#57B1E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B1E7

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B1E7	#FFFFFF	#000000	##000000
##57B1E7	1.00	2.37	8.85	8.85
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.85	21.00	1.00	1.00
##000000	8.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B0EA

Deuteranopia (green-blind)

#84A2E6

Tritanopia (blue-blind)

#00BFC3

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #57b1e7;
/* rgb */ color: rgb(87, 177, 231);
/* oklch */ color: oklch(72.7% 0.116 237.7);

Tailwind

colors: {
  custom: {
    50: '#93c8ee',
    500: '#57b1e7',
    950: '#000000',
  },
}

SCSS

$custom: #57b1e7;
$custom-light: #93c8ee;
$custom-dark: #000000;

JSON

{
  "hex": "#57b1e7",
  "rgb": {
    "r": 87,
    "g": 177,
    "b": 231
  },
  "hsl": {
    "h": 202.5,
    "s": 75,
    "l": 62.353
  },
  "oklch": {
    "l": 0.72719,
    "c": 0.11644,
    "h": 237.7
  },
  "luminance": 0.3924
}

Semantic roles & 50–950 ramp

primary

#57B1E7

secondary

#E7C6B3

accent

#5A0ED7

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #57B1E7

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

Preview Lab → · Contrast checker → · Palette generator →