#57A3EB#57A3EB

#57A3EB is a light, vivid cyan. Relative luminance 0.342; OKLCH L 69.8% C 0.131 H 249.1°. Best body text is #000000 at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#57A3EB
RGB	rgb(87, 163, 235)
HSL	hsl(209, 79%, 63%)
HSV	hsv(209, 63%, 92%)
CMYK	cmyk(63%, 30.6%, 0%, 7.8%)
CIE-LAB	lab(65.13, -1.81, -43.18)
CIE-LCH	lch(65.13, 43.22, 267.59°)
OKLab	oklab(69.78% -0.0467 -0.122)
OKLCH	oklch(69.78% 0.131 249.1)
XYZ	xyz(32.0175, 34.2156, 83.4981)
Luminance	0.3422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57A3EB #EB9F57

analogous

#57EBE9 #57A3EB #5759EB

triadic

#57A3EB #EB57A3 #A3EB57

tetradic

#57A3EB #E957EB #EB9F57 #59EB57

square

#57A3EB #E957EB #EB9F57 #59EB57

split-complementary

#57A3EB #EB5759 #EBE957

monochromatic

#1566B2 #2085E4 #57A3EB #8EC1F2 #C4DFF8

Accessibility & contrast

On white

2.68

#57A3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.84

#57A3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57A3EB

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57A3EB	#FFFFFF	#000000	##000000
##57A3EB	1.00	2.68	7.84	7.84
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.84	21.00	1.00	1.00
##000000	7.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#84A6EE

Deuteranopia (green-blind)

#7098EA

Tritanopia (blue-blind)

#00B4BD

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #57a3eb;
/* rgb */ color: rgb(87, 163, 235);
/* oklch */ color: oklch(69.8% 0.131 249.1);

Tailwind

colors: {
  custom: {
    50: '#93bef1',
    500: '#57a3eb',
    950: '#000000',
  },
}

SCSS

$custom: #57a3eb;
$custom-light: #93bef1;
$custom-dark: #000000;

JSON

{
  "hex": "#57a3eb",
  "rgb": {
    "r": 87,
    "g": 163,
    "b": 235
  },
  "hsl": {
    "h": 209.189,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.69783,
    "c": 0.13058,
    "h": 249.1
  },
  "luminance": 0.34219
}

Semantic roles & 50–950 ramp

primary

#57A3EB

secondary

#E9CEB4

accent

#700ADB

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1217

muted

#7E8185

Preview Lab

Preview with #57A3EB

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

Preview Lab → · Contrast checker → · Palette generator →