#3749DA#3749DA

#3749DA is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 49.1% C 0.219 H 270.2°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX#3749DA
RGBrgb(55, 73, 218)
HSLhsl(233, 69%, 54%)
HSVhsv(233, 75%, 85%)
CMYKcmyk(74.8%, 66.5%, 0%, 14.5%)
CIE-LABlab(38.96, 42.62, -75.77)
CIE-LCHlch(38.96, 86.93, 299.36°)
OKLaboklab(49.1% 0.0008 -0.2192)
OKLCHoklch(49.1% 0.219 270.2)
XYZxyz(16.6087, 10.6375, 67.4940)
Luminance0.1064 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3749DA #DAC837
analogous
#379ADA #3749DA #7637DA
triadic
#3749DA #DA3749 #49DA37
tetradic
#3749DA #DA379A #DAC837 #37DA76
square
#3749DA #DA379A #DAC837 #37DA76
split-complementary
#3749DA #DA7637 #9ADA37
monochromatic
#18237F #2131B3 #3749DA #6B78E4 #9EA7ED

Accessibility & contrast

On white

6.71
#3749DA on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.13
#3749DA on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3749DA
6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3749DA#FFFFFF#000000##FFFFFF
##3749DA1.006.713.136.71
#FFFFFF6.711.0021.001.00
#0000003.1321.001.0021.00
##FFFFFF6.711.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0064DF
Deuteranopia (green-blind)
#0054D7
Tritanopia (blue-blind)
#00708B
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #3749da;
/* rgb */ color: rgb(55, 73, 218);
/* oklch */ color: oklch(49.1% 0.219 270.2);
Tailwind
colors: {
  custom: {
    50: '#867ce7',
    500: '#3749da',
    950: '#000000',
  },
}
SCSS
$custom: #3749da;
$custom-light: #867ce7;
$custom-dark: #000000;
JSON
{
  "hex": "#3749da",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 218
  },
  "hsl": {
    "h": 233.374,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.49103,
    "c": 0.21922,
    "h": 270.2
  },
  "luminance": 0.10639
}

Semantic roles & 50–950 ramp

primary
#3749DA
secondary
#D9D293
accent
#D83CEC
background
#F9F7FE
surface
#F1EEFD
border
#CBC9D5
text
#0D0916
muted
#7E7B84

Preview Lab

Preview with #3749DA

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

Preview Lab → · Contrast checker → · Palette generator →

#3749DA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva