#3743B0#3743B0

#3743B0 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.3% C 0.172 H 272.4°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX#3743B0
RGBrgb(55, 67, 176)
HSLhsl(234, 52%, 45%)
HSVhsv(234, 69%, 69%)
CMYKcmyk(68.8%, 61.9%, 0%, 31%)
CIE-LABlab(33.90, 31.62, -59.56)
CIE-LCHlch(33.90, 67.43, 297.96°)
OKLaboklab(44.27% 0.0072 -0.1718)
OKLCHoklch(44.27% 0.172 272.4)
XYZxyz(11.4165, 7.9600, 42.0007)
Luminance0.0796 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3743B0 #B0A437
analogous
#377FB0 #3743B0 #6837B0
triadic
#3743B0 #B03743 #43B037
tetradic
#3743B0 #B0377F #B0A437 #37B068
square
#3743B0 #B0377F #B0A437 #37B068
split-complementary
#3743B0 #B06837 #7FB037
monochromatic
#1A1F53 #283181 #3743B0 #5964CB #8890DA

Accessibility & contrast

On white

8.10
#3743B0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.59
#3743B0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3743B0
8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3743B0#FFFFFF#000000##FFFFFF
##3743B01.008.102.598.10
#FFFFFF8.101.0021.001.00
#0000002.5921.001.0021.00
##FFFFFF8.101.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0055B4
Deuteranopia (green-blind)
#004AAE
Tritanopia (blue-blind)
#005F73
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3743b0;
/* rgb */ color: rgb(55, 67, 176);
/* oklch */ color: oklch(44.3% 0.172 272.4);
Tailwind
colors: {
  custom: {
    50: '#7d77c8',
    500: '#3743b0',
    950: '#000000',
  },
}
SCSS
$custom: #3743b0;
$custom-light: #7d77c8;
$custom-dark: #000000;
JSON
{
  "hex": "#3743b0",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 176
  },
  "hsl": {
    "h": 234.05,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.44274,
    "c": 0.17193,
    "h": 272.4
  },
  "luminance": 0.07961
}

Semantic roles & 50–950 ramp

primary
#3743B0
secondary
#C4BD7F
accent
#CE4CDC
background
#F8F7FC
surface
#EFEDF8
border
#CAC8D1
text
#0B0813
muted
#7C7B82

Preview Lab

Preview with #3743B0

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

Preview Lab → · Contrast checker → · Palette generator →

#3743B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva