#39B5E3#39B5E3

#39B5E3 is a light, vivid cyan. Relative luminance 0.395; OKLCH L 72.6% C 0.124 H 227.6°. Best body text is #000000 at 8.89:1 contrast (WCAG AA passes).

Color values

HEX#39B5E3
RGBrgb(57, 181, 227)
HSLhsl(196, 75%, 56%)
HSVhsv(196, 75%, 89%)
CMYKcmyk(74.9%, 20.3%, 0%, 11%)
CIE-LABlab(69.08, -18.65, -32.70)
CIE-LCHlch(69.08, 37.65, 240.31°)
OKLaboklab(72.56% -0.0838 -0.0918)
OKLCHoklch(72.56% 0.124 227.6)
XYZxyz(32.0707, 39.4598, 78.5844)
Luminance0.3946 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#39B5E3 #E36739
analogous
#39E3BC #39B5E3 #3960E3
triadic
#39B5E3 #E339B5 #B5E339
tetradic
#39B5E3 #BC39E3 #E36739 #60E339
square
#39B5E3 #BC39E3 #E36739 #60E339
split-complementary
#39B5E3 #E33960 #E3BC39
monochromatic
#146D8E #1C96C3 #39B5E3 #6FC9EB #A4DDF2

Accessibility & contrast

On white

2.36
#39B5E3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.89
#39B5E3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #39B5E3
8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##39B5E3#FFFFFF#000000##000000
##39B5E31.002.368.898.89
#FFFFFF2.361.0021.0021.00
#0000008.8921.001.001.00
##0000008.8921.001.001.00

Color blindness preview

Protanopia (red-blind)
#9DB2E5
Deuteranopia (green-blind)
#86A1E2
Tritanopia (blue-blind)
#00C2C4
Achromatopsia (no color)
#A9A9A9

Design tokens & code

CSS
--color: #39b5e3;
/* rgb */ color: rgb(57, 181, 227);
/* oklch */ color: oklch(72.6% 0.124 227.6);
Tailwind
colors: {
  custom: {
    50: '#87cbec',
    500: '#39b5e3',
    950: '#000000',
  },
}
SCSS
$custom: #39b5e3;
$custom-light: #87cbec;
$custom-dark: #000000;
JSON
{
  "hex": "#39b5e3",
  "rgb": {
    "r": 57,
    "g": 181,
    "b": 227
  },
  "hsl": {
    "h": 196.235,
    "s": 75.221,
    "l": 55.686
  },
  "oklch": {
    "l": 0.72558,
    "c": 0.12431,
    "h": 227.6
  },
  "luminance": 0.39464
}

Semantic roles & 50–950 ramp

primary
#39B5E3
secondary
#DFAC99
accent
#6936F2
background
#F9FCFE
surface
#F1F8FD
border
#CBD1D5
text
#0D1316
muted
#7E8284

Preview Lab

Preview with #39B5E3

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

Preview Lab → · Contrast checker → · Palette generator →

#39B5E3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva