#3737C3#3737C3

#3737C3 is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.1% C 0.210 H 273.6°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX#3737C3
RGBrgb(55, 55, 195)
HSLhsl(240, 56%, 49%)
HSVhsv(240, 72%, 76%)
CMYKcmyk(71.8%, 71.8%, 0%, 23.5%)
CIE-LABlab(32.88, 45.51, -72.44)
CIE-LCHlch(32.88, 85.55, 302.14°)
OKLaboklab(44.06% 0.0133 -0.2095)
OKLCHoklch(44.06% 0.21 273.6)
XYZxyz(12.7888, 7.4835, 52.3896)
Luminance0.0748 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3737C3 #C3C337
analogous
#377DC3 #3737C3 #7D37C3
triadic
#3737C3 #C33737 #37C337
tetradic
#3737C3 #C3377D #C3C337 #37C37D
square
#3737C3 #C3377D #C3C337 #37C37D
split-complementary
#3737C3 #C37D37 #7DC337
monochromatic
#1C1C64 #2A2A93 #3737C3 #6464D3 #9494E1

Accessibility & contrast

On white

8.41
#3737C3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.50
#3737C3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737C3
8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3737C3#FFFFFF#000000##FFFFFF
##3737C31.008.412.508.41
#FFFFFF8.411.0021.001.00
#0000002.5021.001.0021.00
##FFFFFF8.411.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0054C7
Deuteranopia (green-blind)
#0047C0
Tritanopia (blue-blind)
#005E79
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #3737c3;
/* rgb */ color: rgb(55, 55, 195);
/* oklch */ color: oklch(44.1% 0.210 273.6);
Tailwind
colors: {
  custom: {
    50: '#826fd6',
    500: '#3737c3',
    950: '#000000',
  },
}
SCSS
$custom: #3737c3;
$custom-light: #826fd6;
$custom-dark: #000000;
JSON
{
  "hex": "#3737c3",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 195
  },
  "hsl": {
    "h": 240,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.44062,
    "c": 0.20993,
    "h": 273.6
  },
  "luminance": 0.07485
}

Semantic roles & 50–950 ramp

primary
#3737C3
secondary
#CCCC8A
accent
#DF49DF
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0C0715
muted
#7D7A83

Preview Lab

Preview with #3737C3

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

Preview Lab → · Contrast checker → · Palette generator →

#3737C3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva