#57BDE9#57BDE9

#57BDE9 is a light, moderate cyan. Relative luminance 0.443; OKLCH L 75.5% C 0.113 H 229.3°. Best body text is #000000 at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#57BDE9
RGB	rgb(87, 189, 233)
HSL	hsl(198, 77%, 63%)
HSV	hsv(198, 63%, 91%)
CMYK	cmyk(62.7%, 18.9%, 0%, 8.6%)
CIE-LAB	lab(72.43, -16.64, -30.74)
CIE-LCH	lch(72.43, 34.95, 241.57°)
OKLab	oklab(75.53% -0.0739 -0.0859)
OKLCH	oklch(75.53% 0.113 229.3)
XYZ	xyz(36.8303, 44.3008, 83.6849)
Luminance	0.4430 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57BDE9 #E98357

analogous

#57E9CC #57BDE9 #5774E9

triadic

#57BDE9 #E957BD #BDE957

tetradic

#57BDE9 #CC57E9 #E98357 #74E957

square

#57BDE9 #CC57E9 #E98357 #74E957

split-complementary

#57BDE9 #E95774 #E9CC57

monochromatic

#1781AF #21A8E2 #57BDE9 #8DD2F0 #C3E8F7

Accessibility & contrast

On white

2.13

#57BDE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.86

#57BDE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57BDE9

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57BDE9	#FFFFFF	#000000	##000000
##57BDE9	1.00	2.13	9.86	9.86
#FFFFFF	2.13	1.00	21.00	21.00
#000000	9.86	21.00	1.00	1.00
##000000	9.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6BAEB

Deuteranopia (green-blind)

#92ABE8

Tritanopia (blue-blind)

#00C9CB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #57bde9;
/* rgb */ color: rgb(87, 189, 233);
/* oklch */ color: oklch(75.5% 0.113 229.3);

Tailwind

colors: {
  custom: {
    50: '#94d1f0',
    500: '#57bde9',
    950: '#000000',
  },
}

SCSS

$custom: #57bde9;
$custom-light: #94d1f0;
$custom-dark: #000000;

JSON

{
  "hex": "#57bde9",
  "rgb": {
    "r": 87,
    "g": 189,
    "b": 233
  },
  "hsl": {
    "h": 198.082,
    "s": 76.842,
    "l": 62.745
  },
  "oklch": {
    "l": 0.75534,
    "c": 0.11334,
    "h": 229.3
  },
  "luminance": 0.44305
}

Semantic roles & 50–950 ramp

primary

#57BDE9

secondary

#E8C3B3

accent

#4A0CD9

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #57BDE9

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

Preview Lab → · Contrast checker → · Palette generator →