#39B8E9#39B8E9

#39B8E9 is a light, vivid cyan. Relative luminance 0.410; OKLCH L 73.5% C 0.128 H 228.7°. Best body text is #000000 at 9.21:1 contrast (WCAG AA passes).

Color values

HEX#39B8E9
RGBrgb(57, 184, 233)
HSLhsl(197, 80%, 57%)
HSVhsv(197, 76%, 91%)
CMYKcmyk(75.5%, 21%, 0%, 8.6%)
CIE-LABlab(70.20, -18.25, -34.25)
CIE-LCHlch(70.20, 38.81, 241.95°)
OKLaboklab(73.53% -0.0845 -0.0962)
OKLCHoklch(73.53% 0.128 228.7)
XYZxyz(33.5298, 41.0300, 83.2274)
Luminance0.4103 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#39B8E9 #E96A39
analogous
#39E9C2 #39B8E9 #3960E9
triadic
#39B8E9 #E939B8 #B8E939
tetradic
#39B8E9 #C239E9 #E96A39 #60E939
square
#39B8E9 #C239E9 #E96A39 #60E939
split-complementary
#39B8E9 #E93960 #E9C239
monochromatic
#117297 #179BCE #39B8E9 #70CCEF #A7E0F5

Accessibility & contrast

On white

2.28
#39B8E9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.21
#39B8E9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #39B8E9
9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##39B8E9#FFFFFF#000000##000000
##39B8E91.002.289.219.21
#FFFFFF2.281.0021.0021.00
#0000009.2121.001.001.00
##0000009.2121.001.001.00

Color blindness preview

Protanopia (red-blind)
#9EB5EB
Deuteranopia (green-blind)
#87A4E8
Tritanopia (blue-blind)
#00C6C8
Achromatopsia (no color)
#ACACAC

Design tokens & code

CSS
--color: #39b8e9;
/* rgb */ color: rgb(57, 184, 233);
/* oklch */ color: oklch(73.5% 0.128 228.7);
Tailwind
colors: {
  custom: {
    50: '#88cdf0',
    500: '#39b8e9',
    950: '#000000',
  },
}
SCSS
$custom: #39b8e9;
$custom-light: #88cdf0;
$custom-dark: #000000;
JSON
{
  "hex": "#39b8e9",
  "rgb": {
    "r": 57,
    "g": 184,
    "b": 233
  },
  "hsl": {
    "h": 196.705,
    "s": 80,
    "l": 56.863
  },
  "oklch": {
    "l": 0.73528,
    "c": 0.12806,
    "h": 228.7
  },
  "luminance": 0.41034
}

Semantic roles & 50–950 ramp

primary
#39B8E9
secondary
#E3AF9B
accent
#6831F6
background
#F9FCFE
surface
#F1F9FD
border
#CBD2D5
text
#0D1316
muted
#7E8284

Preview Lab

Preview with #39B8E9

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

Preview Lab → · Contrast checker → · Palette generator →

#39B8E9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva