#57B4EB#57B4EB

#57B4EB is a light, moderate cyan. Relative luminance 0.407; OKLCH L 73.6% C 0.119 H 237.4°. Best body text is #000000 at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#57B4EB
RGB	rgb(87, 180, 235)
HSL	hsl(202, 79%, 63%)
HSV	hsv(202, 63%, 92%)
CMYK	cmyk(63%, 23.4%, 0%, 7.8%)
CIE-LAB	lab(69.94, -11.22, -35.67)
CIE-LCH	lch(69.94, 37.40, 252.54°)
OKLab	oklab(73.58% -0.064 -0.1001)
OKLCH	oklch(73.58% 0.119 237.4)
XYZ	xyz(35.2414, 40.6633, 84.5727)
Luminance	0.4067 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B4EB #EB8E57

analogous

#57EBD8 #57B4EB #576AEB

triadic

#57B4EB #EB57B4 #B4EB57

tetradic

#57B4EB #D857EB #EB8E57 #6AEB57

square

#57B4EB #D857EB #EB8E57 #6AEB57

split-complementary

#57B4EB #EB576A #EBD857

monochromatic

#1578B2 #209CE4 #57B4EB #8ECCF2 #C4E5F8

Accessibility & contrast

On white

2.30

#57B4EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.13

#57B4EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B4EB

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B4EB	#FFFFFF	#000000	##000000
##57B4EB	1.00	2.30	9.13	9.13
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.13	21.00	1.00	1.00
##000000	9.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB3EE

Deuteranopia (green-blind)

#86A4EA

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #57b4eb;
/* rgb */ color: rgb(87, 180, 235);
/* oklch */ color: oklch(73.6% 0.119 237.4);

Tailwind

colors: {
  custom: {
    50: '#94caf1',
    500: '#57b4eb',
    950: '#000000',
  },
}

SCSS

$custom: #57b4eb;
$custom-light: #94caf1;
$custom-dark: #000000;

JSON

{
  "hex": "#57b4eb",
  "rgb": {
    "r": 87,
    "g": 180,
    "b": 235
  },
  "hsl": {
    "h": 202.297,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.73579,
    "c": 0.11884,
    "h": 237.4
  },
  "luminance": 0.40667
}

Semantic roles & 50–950 ramp

primary

#57B4EB

secondary

#E9C8B4

accent

#580ADB

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #57B4EB

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

Preview Lab → · Contrast checker → · Palette generator →