#3743B2#3743B2

#3743B2 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.4% C 0.175 H 272.4°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX#3743B2
RGBrgb(55, 67, 178)
HSLhsl(234, 53%, 46%)
HSVhsv(234, 69%, 70%)
CMYKcmyk(69.1%, 62.4%, 0%, 30.2%)
CIE-LABlab(34.07, 32.33, -60.47)
CIE-LCHlch(34.07, 68.57, 298.13°)
OKLaboklab(44.45% 0.0072 -0.1745)
OKLCHoklch(44.45% 0.175 272.4)
XYZxyz(11.6159, 8.0398, 43.0505)
Luminance0.0804 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3743B2 #B2A637
analogous
#3780B2 #3743B2 #6837B2
triadic
#3743B2 #B23743 #43B237
tetradic
#3743B2 #B23780 #B2A637 #37B268
square
#3743B2 #B23780 #B2A637 #37B268
split-complementary
#3743B2 #B26837 #80B237
monochromatic
#1A2054 #293183 #3743B2 #5A65CC #8991DB

Accessibility & contrast

On white

8.05
#3743B2 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.61
#3743B2 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3743B2
8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3743B2#FFFFFF#000000##FFFFFF
##3743B21.008.052.618.05
#FFFFFF8.051.0021.001.00
#0000002.6121.001.0021.00
##FFFFFF8.051.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0056B6
Deuteranopia (green-blind)
#004BB0
Tritanopia (blue-blind)
#005F74
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3743b2;
/* rgb */ color: rgb(55, 67, 178);
/* oklch */ color: oklch(44.4% 0.175 272.4);
Tailwind
colors: {
  custom: {
    50: '#7e77ca',
    500: '#3743b2',
    950: '#000000',
  },
}
SCSS
$custom: #3743b2;
$custom-light: #7e77ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3743b2",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 178
  },
  "hsl": {
    "h": 234.146,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.44449,
    "c": 0.17462,
    "h": 272.4
  },
  "luminance": 0.08041
}

Semantic roles & 50–950 ramp

primary
#3743B2
secondary
#C5BE80
accent
#CE4CDC
background
#F8F7FC
surface
#EFEDF8
border
#CAC8D1
text
#0B0813
muted
#7C7B82

Preview Lab

Preview with #3743B2

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

Preview Lab → · Contrast checker → · Palette generator →

#3743B2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva