#57B3EB#57B3EB

#57B3EB is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.4% C 0.119 H 238.1°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#57B3EB
RGB	rgb(87, 179, 235)
HSL	hsl(203, 79%, 63%)
HSV	hsv(203, 63%, 92%)
CMYK	cmyk(63%, 23.8%, 0%, 7.8%)
CIE-LAB	lab(69.66, -10.68, -36.12)
CIE-LCH	lch(69.66, 37.66, 253.52°)
OKLab	oklab(73.35% -0.063 -0.1014)
OKLCH	oklch(73.35% 0.119 238.1)
XYZ	xyz(35.0402, 40.2611, 84.5057)
Luminance	0.4027 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B3EB #EB8F57

analogous

#57EBD9 #57B3EB #5769EB

triadic

#57B3EB #EB57B3 #B3EB57

tetradic

#57B3EB #D957EB #EB8F57 #69EB57

square

#57B3EB #D957EB #EB8F57 #69EB57

split-complementary

#57B3EB #EB5769 #EBD957

monochromatic

#1577B2 #209AE4 #57B3EB #8ECCF2 #C4E4F8

Accessibility & contrast

On white

2.32

#57B3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#57B3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B3EB

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B3EB	#FFFFFF	#000000	##000000
##57B3EB	1.00	2.32	9.05	9.05
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.05	21.00	1.00	1.00
##000000	9.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B2EE

Deuteranopia (green-blind)

#85A4EA

Tritanopia (blue-blind)

#00C1C6

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #57b3eb;
/* rgb */ color: rgb(87, 179, 235);
/* oklch */ color: oklch(73.4% 0.119 238.1);

Tailwind

colors: {
  custom: {
    50: '#94c9f1',
    500: '#57b3eb',
    950: '#000000',
  },
}

SCSS

$custom: #57b3eb;
$custom-light: #94c9f1;
$custom-dark: #000000;

JSON

{
  "hex": "#57b3eb",
  "rgb": {
    "r": 87,
    "g": 179,
    "b": 235
  },
  "hsl": {
    "h": 202.703,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.73354,
    "c": 0.11937,
    "h": 238.1
  },
  "luminance": 0.40265
}

Semantic roles & 50–950 ramp

primary

#57B3EB

secondary

#E9C8B4

accent

#590ADB

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #57B3EB

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

Preview Lab → · Contrast checker → · Palette generator →