#3739C6#3739C6

#3739C6 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.7% C 0.212 H 273.2°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX#3739C6
RGBrgb(55, 57, 198)
HSLhsl(239, 57%, 50%)
HSVhsv(239, 72%, 78%)
CMYKcmyk(72.2%, 71.2%, 0%, 22.4%)
CIE-LABlab(33.59, 45.35, -73.02)
CIE-LCHlch(33.59, 85.96, 301.84°)
OKLaboklab(44.66% 0.0117 -0.2112)
OKLCHoklch(44.66% 0.212 273.2)
XYZxyz(13.2283, 7.8144, 54.2263)
Luminance0.0782 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3739C6 #C6C437
analogous
#3781C6 #3739C6 #7D37C6
triadic
#3739C6 #C63739 #39C637
tetradic
#3739C6 #C63781 #C6C437 #37C67D
square
#3739C6 #C63781 #C6C437 #37C67D
split-complementary
#3739C6 #C67D37 #81C637
monochromatic
#1C1D66 #2A2B96 #3739C6 #6667D4 #9697E2

Accessibility & contrast

On white

8.19
#3739C6 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.56
#3739C6 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3739C6
8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3739C6#FFFFFF#000000##FFFFFF
##3739C61.008.192.568.19
#FFFFFF8.191.0021.001.00
#0000002.5621.001.0021.00
##FFFFFF8.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0056CA
Deuteranopia (green-blind)
#0048C3
Tritanopia (blue-blind)
#00617C
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #3739c6;
/* rgb */ color: rgb(55, 57, 198);
/* oklch */ color: oklch(44.7% 0.212 273.2);
Tailwind
colors: {
  custom: {
    50: '#8371d9',
    500: '#3739c6',
    950: '#000000',
  },
}
SCSS
$custom: #3739c6;
$custom-light: #8371d9;
$custom-dark: #000000;
JSON
{
  "hex": "#3739c6",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 198
  },
  "hsl": {
    "h": 239.161,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.44658,
    "c": 0.21155,
    "h": 273.2
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary
#3739C6
secondary
#CDCC8C
accent
#DE48E0
background
#F8F6FD
surface
#F0ECFB
border
#CBC7D4
text
#0C0815
muted
#7D7B83

Preview Lab

Preview with #3739C6

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

Preview Lab → · Contrast checker → · Palette generator →

#3739C6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva