#3737D3#3737D3

#3737D3 is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.7% C 0.229 H 272.6°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX#3737D3
RGBrgb(55, 55, 211)
HSLhsl(240, 64%, 52%)
HSVhsv(240, 74%, 83%)
CMYKcmyk(73.9%, 73.9%, 0%, 17.3%)
CIE-LABlab(34.49, 50.73, -79.10)
CIE-LCHlch(34.49, 93.97, 302.67°)
OKLaboklab(45.69% 0.0106 -0.2289)
OKLCHoklch(45.69% 0.229 272.6)
XYZxyz(14.6957, 8.2462, 62.4326)
Luminance0.0825 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3737D3 #D3D337
analogous
#3785D3 #3737D3 #8537D3
triadic
#3737D3 #D33737 #37D337
tetradic
#3737D3 #D33785 #D3D337 #37D385
square
#3737D3 #D33785 #D3D337 #37D385
split-complementary
#3737D3 #D38537 #85D337
monochromatic
#1A1A76 #2525A8 #3737D3 #6969DE #9B9BE9

Accessibility & contrast

On white

7.93
#3737D3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.65
#3737D3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737D3
7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3737D3#FFFFFF#000000##FFFFFF
##3737D31.007.932.657.93
#FFFFFF7.931.0021.001.00
#0000002.6521.001.0021.00
##FFFFFF7.931.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0059D8
Deuteranopia (green-blind)
#0049D0
Tritanopia (blue-blind)
#006482
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #3737d3;
/* rgb */ color: rgb(55, 55, 211);
/* oklch */ color: oklch(45.7% 0.229 272.6);
Tailwind
colors: {
  custom: {
    50: '#8670e2',
    500: '#3737d3',
    950: '#000000',
  },
}
SCSS
$custom: #3737d3;
$custom-light: #8670e2;
$custom-dark: #000000;
JSON
{
  "hex": "#3737d3",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 211
  },
  "hsl": {
    "h": 240,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.45686,
    "c": 0.22916,
    "h": 272.6
  },
  "luminance": 0.08248
}

Semantic roles & 50–950 ramp

primary
#3737D3
secondary
#D5D591
accent
#E741E7
background
#F9F6FE
surface
#F1ECFC
border
#CBC7D5
text
#0D0816
muted
#7E7B84

Preview Lab

Preview with #3737D3

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

Preview Lab → · Contrast checker → · Palette generator →

#3737D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva