#3745B9#3745B9

#3745B9 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.4% C 0.182 H 271.7°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX#3745B9
RGBrgb(55, 69, 185)
HSLhsl(234, 54%, 47%)
HSVhsv(234, 70%, 73%)
CMYKcmyk(70.3%, 62.7%, 0%, 27.5%)
CIE-LABlab(35.14, 33.54, -62.85)
CIE-LCHlch(35.14, 71.24, 298.09°)
OKLaboklab(45.42% 0.0054 -0.1814)
OKLCHoklch(45.42% 0.182 271.7)
XYZxyz(12.4577, 8.5700, 46.8872)
Luminance0.0857 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3745B9 #B9AB37
analogous
#3786B9 #3745B9 #6A37B9
triadic
#3745B9 #B93745 #45B937
tetradic
#3745B9 #B93786 #B9AB37 #37B96A
square
#3745B9 #B93786 #B9AB37 #37B96A
split-complementary
#3745B9 #B96A37 #86B937
monochromatic
#1B225B #29338A #3745B9 #5E6ACF #8D96DD

Accessibility & contrast

On white

7.74
#3745B9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.71
#3745B9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3745B9
7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3745B9#FFFFFF#000000##FFFFFF
##3745B91.007.742.717.74
#FFFFFF7.741.0021.001.00
#0000002.7121.001.0021.00
##FFFFFF7.741.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0059BD
Deuteranopia (green-blind)
#004DB7
Tritanopia (blue-blind)
#006378
Achromatopsia (no color)
#535353

Design tokens & code

CSS
--color: #3745b9;
/* rgb */ color: rgb(55, 69, 185);
/* oklch */ color: oklch(45.4% 0.182 271.7);
Tailwind
colors: {
  custom: {
    50: '#7f78cf',
    500: '#3745b9',
    950: '#000000',
  },
}
SCSS
$custom: #3745b9;
$custom-light: #7f78cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3745b9",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 185
  },
  "hsl": {
    "h": 233.538,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.45424,
    "c": 0.18152,
    "h": 271.7
  },
  "luminance": 0.08571
}

Semantic roles & 50–950 ramp

primary
#3745B9
secondary
#C8C084
accent
#CE4ADE
background
#F8F7FC
surface
#F0EDF9
border
#CBC8D2
text
#0B0914
muted
#7C7B82

Preview Lab

Preview with #3745B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3745B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva