#57B4ED#57B4ED

#57B4ED is a light, vivid cyan. Relative luminance 0.408; OKLCH L 73.7% C 0.121 H 238.4°. Best body text is #000000 at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#57B4ED
RGB	rgb(87, 180, 237)
HSL	hsl(203, 81%, 64%)
HSV	hsv(203, 63%, 93%)
CMYK	cmyk(63.3%, 24.1%, 0%, 7.1%)
CIE-LAB	lab(70.02, -10.59, -36.64)
CIE-LCH	lch(70.02, 38.14, 253.87°)
OKLab	oklab(73.67% -0.0634 -0.1029)
OKLCH	oklch(73.67% 0.121 238.4)
XYZ	xyz(35.5320, 40.7796, 86.1030)
Luminance	0.4078 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B4ED #ED9057

analogous

#57EDDB #57B4ED #5769ED

triadic

#57B4ED #ED57B4 #B4ED57

tetradic

#57B4ED #DB57ED #ED9057 #69ED57

square

#57B4ED #DB57ED #ED9057 #69ED57

split-complementary

#57B4ED #ED5769 #EDDB57

monochromatic

#1478B6 #209BE7 #57B4ED #8ECDF3 #C6E5F9

Accessibility & contrast

On white

2.29

#57B4ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.16

#57B4ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B4ED

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B4ED	#FFFFFF	#000000	##000000
##57B4ED	1.00	2.29	9.16	9.16
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.16	21.00	1.00	1.00
##000000	9.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB4F0

Deuteranopia (green-blind)

#85A5EC

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #57b4ed;
/* rgb */ color: rgb(87, 180, 237);
/* oklch */ color: oklch(73.7% 0.121 238.4);

Tailwind

colors: {
  custom: {
    50: '#94caf3',
    500: '#57b4ed',
    950: '#000000',
  },
}

SCSS

$custom: #57b4ed;
$custom-light: #94caf3;
$custom-dark: #000000;

JSON

{
  "hex": "#57b4ed",
  "rgb": {
    "r": 87,
    "g": 180,
    "b": 237
  },
  "hsl": {
    "h": 202.8,
    "s": 80.645,
    "l": 63.529
  },
  "oklch": {
    "l": 0.73671,
    "c": 0.12083,
    "h": 238.4
  },
  "luminance": 0.40783
}

Semantic roles & 50–950 ramp

primary

#57B4ED

secondary

#EACAB5

accent

#5909DD

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #57B4ED

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

Preview Lab → · Contrast checker → · Palette generator →