#399BD1#399BD1

#399BD1 is a light, vivid cyan. Relative luminance 0.289; OKLCH L 65.6% C 0.120 H 237.1°. Best body text is #000000 at 6.78:1 contrast (WCAG AA passes).

Color values

HEX#399BD1
RGBrgb(57, 155, 209)
HSLhsl(201, 62%, 52%)
HSVhsv(201, 73%, 82%)
CMYKcmyk(72.7%, 25.8%, 0%, 18%)
CIE-LABlab(60.70, -10.64, -35.79)
CIE-LCHlch(60.70, 37.33, 253.44°)
OKLaboklab(65.63% -0.0653 -0.1009)
OKLCHoklch(65.63% 0.12 237.1)
XYZxyz(24.9128, 28.9131, 64.5771)
Luminance0.2892 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#399BD1 #D16F39
analogous
#39D1BB #399BD1 #394FD1
triadic
#399BD1 #D1399B #9BD139
tetradic
#399BD1 #BB39D1 #D16F39 #4FD139
square
#399BD1 #BB39D1 #D16F39 #4FD139
split-complementary
#399BD1 #D1394F #D1BB39
monochromatic
#1B5575 #2779A6 #399BD1 #6BB4DD #9CCDE8

Accessibility & contrast

On white

3.10
#399BD1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.78
#399BD1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BD1
6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##399BD1#FFFFFF#000000##000000
##399BD11.003.106.786.78
#FFFFFF3.101.0021.0021.00
#0000006.7821.001.001.00
##0000006.7821.001.001.00

Color blindness preview

Protanopia (red-blind)
#819BD3
Deuteranopia (green-blind)
#6D8CD0
Tritanopia (blue-blind)
#00A9AE
Achromatopsia (no color)
#929292

Design tokens & code

CSS
--color: #399bd1;
/* rgb */ color: rgb(57, 155, 209);
/* oklch */ color: oklch(65.6% 0.120 237.1);
Tailwind
colors: {
  custom: {
    50: '#83b8df',
    500: '#399bd1',
    950: '#000000',
  },
}
SCSS
$custom: #399bd1;
$custom-light: #83b8df;
$custom-dark: #000000;
JSON
{
  "hex": "#399bd1",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 209
  },
  "hsl": {
    "h": 201.316,
    "s": 62.295,
    "l": 52.157
  },
  "oklch": {
    "l": 0.65629,
    "c": 0.12019,
    "h": 237.1
  },
  "luminance": 0.28916
}

Semantic roles & 50–950 ramp

primary
#399BD1
secondary
#D4A992
accent
#7C42E5
background
#F8FBFD
surface
#F0F6FB
border
#CBD0D4
text
#0C1115
muted
#7D8083

Preview Lab

Preview with #399BD1

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

Preview Lab → · Contrast checker → · Palette generator →

#399BD1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva