#57B9EB#57B9EB

#57B9EB is a light, moderate cyan. Relative luminance 0.427; OKLCH L 74.7% C 0.116 H 233.6°. Best body text is #000000 at 9.54:1 contrast (WCAG AA passes).

Color values

HEX#57B9EB
RGBrgb(87, 185, 235)
HSLhsl(200, 79%, 63%)
HSVhsv(200, 63%, 92%)
CMYKcmyk(63%, 21.3%, 0%, 7.8%)
CIE-LABlab(71.36, -13.90, -33.47)
CIE-LCHlch(71.36, 36.24, 247.44°)
OKLaboklab(74.71% -0.0691 -0.0937)
OKLCHoklch(74.71% 0.116 233.6)
XYZxyz(36.2690, 42.7186, 84.9153)
Luminance0.4272 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#57B9EB #EB8957
analogous
#57EBD3 #57B9EB #576FEB
triadic
#57B9EB #EB57B9 #B9EB57
tetradic
#57B9EB #D357EB #EB8957 #6FEB57
square
#57B9EB #D357EB #EB8957 #6FEB57
split-complementary
#57B9EB #EB576F #EBD357
monochromatic
#157DB2 #20A2E4 #57B9EB #8ED0F2 #C4E7F8

Accessibility & contrast

On white

2.20
#57B9EB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.54
#57B9EB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B9EB
9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##57B9EB#FFFFFF#000000##000000
##57B9EB1.002.209.549.54
#FFFFFF2.201.0021.0021.00
#0000009.5421.001.001.00
##0000009.5421.001.001.00

Color blindness preview

Protanopia (red-blind)
#A1B7ED
Deuteranopia (green-blind)
#8CA8EA
Tritanopia (blue-blind)
#00C6CA
Achromatopsia (no color)
#AFAFAF

Design tokens & code

CSS
--color: #57b9eb;
/* rgb */ color: rgb(87, 185, 235);
/* oklch */ color: oklch(74.7% 0.116 233.6);
Tailwind
colors: {
  custom: {
    50: '#94cef1',
    500: '#57b9eb',
    950: '#000000',
  },
}
SCSS
$custom: #57b9eb;
$custom-light: #94cef1;
$custom-dark: #000000;
JSON
{
  "hex": "#57b9eb",
  "rgb": {
    "r": 87,
    "g": 185,
    "b": 235
  },
  "hsl": {
    "h": 200.27,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.74711,
    "c": 0.11648,
    "h": 233.6
  },
  "luminance": 0.42722
}

Semantic roles & 50–950 ramp

primary
#57B9EB
secondary
#E9C6B4
accent
#510ADB
background
#F9FCFE
surface
#F2F9FD
border
#CCD2D5
text
#0E1316
muted
#7E8284

Preview Lab

Preview with #57B9EB

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

Preview Lab → · Contrast checker → · Palette generator →

#57B9EB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva