#57B9EC#57B9EC

#57B9EC is a light, moderate cyan. Relative luminance 0.428; OKLCH L 74.8% C 0.117 H 234.1°. Best body text is #000000 at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#57B9EC
RGB	rgb(87, 185, 236)
HSL	hsl(201, 80%, 63%)
HSV	hsv(201, 63%, 93%)
CMYK	cmyk(63.1%, 21.6%, 0%, 7.5%)
CIE-LAB	lab(71.40, -13.59, -33.95)
CIE-LCH	lch(71.40, 36.57, 248.18°)
OKLab	oklab(74.76% -0.0688 -0.0951)
OKLCH	oklch(74.76% 0.117 234.1)
XYZ	xyz(36.4139, 42.7766, 85.6783)
Luminance	0.4278 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B9EC #EC8A57

analogous

#57ECD4 #57B9EC #576EEC

triadic

#57B9EC #EC57B9 #B9EC57

tetradic

#57B9EC #D457EC #EC8A57 #6EEC57

square

#57B9EC #D457EC #EC8A57 #6EEC57

split-complementary

#57B9EC #EC576E #ECD457

monochromatic

#147EB4 #20A2E6 #57B9EC #8ED0F2 #C5E7F8

Accessibility & contrast

On white

2.20

#57B9EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.56

#57B9EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B9EC

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B9EC	#FFFFFF	#000000	##000000
##57B9EC	1.00	2.20	9.56	9.56
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.56	21.00	1.00	1.00
##000000	9.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B7EE

Deuteranopia (green-blind)

#8CA8EB

Tritanopia (blue-blind)

#00C7CA

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #57b9ec;
/* rgb */ color: rgb(87, 185, 236);
/* oklch */ color: oklch(74.8% 0.117 234.1);

Tailwind

colors: {
  custom: {
    50: '#94cef2',
    500: '#57b9ec',
    950: '#000000',
  },
}

SCSS

$custom: #57b9ec;
$custom-light: #94cef2;
$custom-dark: #000000;

JSON

{
  "hex": "#57b9ec",
  "rgb": {
    "r": 87,
    "g": 185,
    "b": 236
  },
  "hsl": {
    "h": 200.537,
    "s": 79.679,
    "l": 63.333
  },
  "oklch": {
    "l": 0.74755,
    "c": 0.11739,
    "h": 234.1
  },
  "luminance": 0.4278
}

Semantic roles & 50–950 ramp

primary

#57B9EC

secondary

#EAC7B5

accent

#520ADC

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #57B9EC

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

Preview Lab → · Contrast checker → · Palette generator →