#3739C0#3739C0

#3739C0 is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.1% C 0.204 H 273.5°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX#3739C0
RGBrgb(55, 57, 192)
HSLhsl(239, 55%, 48%)
HSVhsv(239, 71%, 75%)
CMYKcmyk(71.4%, 70.3%, 0%, 24.7%)
CIE-LABlab(33.01, 43.35, -70.47)
CIE-LCHlch(33.01, 82.73, 301.60°)
OKLaboklab(44.07% 0.0126 -0.2038)
OKLCHoklch(44.07% 0.204 273.5)
XYZxyz(12.5499, 7.5430, 50.6535)
Luminance0.0754 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3739C0 #C0BE37
analogous
#377DC0 #3739C0 #7937C0
triadic
#3739C0 #C03739 #39C037
tetradic
#3739C0 #C0377D #C0BE37 #37C079
square
#3739C0 #C0377D #C0BE37 #37C079
split-complementary
#3739C0 #C07937 #7DC037
monochromatic
#1C1D61 #292B90 #3739C0 #6264D2 #9293E0

Accessibility & contrast

On white

8.37
#3739C0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.51
#3739C0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3739C0
8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3739C0#FFFFFF#000000##FFFFFF
##3739C01.008.372.518.37
#FFFFFF8.371.0021.001.00
#0000002.5121.001.0021.00
##FFFFFF8.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0054C4
Deuteranopia (green-blind)
#0047BE
Tritanopia (blue-blind)
#005E78
Achromatopsia (no color)
#4E4E4E

Design tokens & code

CSS
--color: #3739c0;
/* rgb */ color: rgb(55, 57, 192);
/* oklch */ color: oklch(44.1% 0.204 273.5);
Tailwind
colors: {
  custom: {
    50: '#8270d4',
    500: '#3739c0',
    950: '#000000',
  },
}
SCSS
$custom: #3739c0;
$custom-light: #8270d4;
$custom-dark: #000000;
JSON
{
  "hex": "#3739c0",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 192
  },
  "hsl": {
    "h": 239.124,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44066,
    "c": 0.20415,
    "h": 273.5
  },
  "luminance": 0.07544
}

Semantic roles & 50–950 ramp

primary
#3739C0
secondary
#CBCA88
accent
#DD49DF
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0C0714
muted
#7D7A83

Preview Lab

Preview with #3739C0

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

Preview Lab → · Contrast checker → · Palette generator →

#3739C0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva