#3748C0#3748C0

#3748C0 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.6% C 0.187 H 270.9°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX#3748C0
RGBrgb(55, 72, 192)
HSLhsl(233, 55%, 48%)
HSVhsv(233, 71%, 75%)
CMYKcmyk(71.4%, 62.5%, 0%, 24.7%)
CIE-LABlab(36.46, 34.12, -64.80)
CIE-LCHlch(36.46, 73.24, 297.77°)
OKLaboklab(46.58% 0.003 -0.1871)
OKLCHoklch(46.58% 0.187 270.9)
XYZxyz(13.4041, 9.2514, 50.9382)
Luminance0.0925 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3748C0 #C0AF37
analogous
#378CC0 #3748C0 #6A37C0
triadic
#3748C0 #C03748 #48C037
tetradic
#3748C0 #C0378C #C0AF37 #37C06A
square
#3748C0 #C0378C #C0AF37 #37C06A
split-complementary
#3748C0 #C06A37 #8CC037
monochromatic
#1C2461 #293690 #3748C0 #6270D2 #929BE0

Accessibility & contrast

On white

7.37
#3748C0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.85
#3748C0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748C0
7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3748C0#FFFFFF#000000##FFFFFF
##3748C01.007.372.857.37
#FFFFFF7.371.0021.001.00
#0000002.8521.001.0021.00
##FFFFFF7.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005CC4
Deuteranopia (green-blind)
#0050BE
Tritanopia (blue-blind)
#00677D
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #3748c0;
/* rgb */ color: rgb(55, 72, 192);
/* oklch */ color: oklch(46.6% 0.187 270.9);
Tailwind
colors: {
  custom: {
    50: '#807bd4',
    500: '#3748c0',
    950: '#000000',
  },
}
SCSS
$custom: #3748c0;
$custom-light: #807bd4;
$custom-dark: #000000;
JSON
{
  "hex": "#3748c0",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 192
  },
  "hsl": {
    "h": 232.555,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.46578,
    "c": 0.18716,
    "h": 270.9
  },
  "luminance": 0.09253
}

Semantic roles & 50–950 ramp

primary
#3748C0
secondary
#CBC288
accent
#CC49DF
background
#F8F7FD
surface
#F0EDFA
border
#CBC8D3
text
#0C0914
muted
#7D7B83

Preview Lab

Preview with #3748C0

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

Preview Lab → · Contrast checker → · Palette generator →

#3748C0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva