#3748BE#3748BE

#3748BE is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.4% C 0.185 H 270.9°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX#3748BE
RGBrgb(55, 72, 190)
HSLhsl(232, 55%, 48%)
HSVhsv(232, 71%, 75%)
CMYKcmyk(71.1%, 62.1%, 0%, 25.5%)
CIE-LABlab(36.30, 33.41, -63.91)
CIE-LCHlch(36.30, 72.11, 297.60°)
OKLaboklab(46.4% 0.003 -0.1845)
OKLCHoklch(46.4% 0.185 270.9)
XYZxyz(13.1840, 9.1633, 49.7791)
Luminance0.0916 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3748BE #BEAD37
analogous
#378CBE #3748BE #6937BE
triadic
#3748BE #BE3748 #48BE37
tetradic
#3748BE #BE378C #BEAD37 #37BE69
square
#3748BE #BE378C #BEAD37 #37BE69
split-complementary
#3748BE #BE6937 #8CBE37
monochromatic
#1C245F #29368F #3748BE #616FD1 #909ADF

Accessibility & contrast

On white

7.41
#3748BE on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.83
#3748BE on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748BE
7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3748BE#FFFFFF#000000##FFFFFF
##3748BE1.007.412.837.41
#FFFFFF7.411.0021.001.00
#0000002.8321.001.0021.00
##FFFFFF7.411.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005CC2
Deuteranopia (green-blind)
#004FBC
Tritanopia (blue-blind)
#00667C
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #3748be;
/* rgb */ color: rgb(55, 72, 190);
/* oklch */ color: oklch(46.4% 0.185 270.9);
Tailwind
colors: {
  custom: {
    50: '#807bd3',
    500: '#3748be',
    950: '#000000',
  },
}
SCSS
$custom: #3748be;
$custom-light: #807bd3;
$custom-dark: #000000;
JSON
{
  "hex": "#3748be",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 190
  },
  "hsl": {
    "h": 232.444,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46404,
    "c": 0.18453,
    "h": 270.9
  },
  "luminance": 0.09165
}

Semantic roles & 50–950 ramp

primary
#3748BE
secondary
#CAC187
accent
#CC49DE
background
#F8F7FD
surface
#F0EDFA
border
#CBC8D3
text
#0C0914
muted
#7D7B83

Preview Lab

Preview with #3748BE

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

Preview Lab → · Contrast checker → · Palette generator →

#3748BE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva