#3734B8#3734B8

#3734B8 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.5% C 0.199 H 274.8°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX#3734B8
RGBrgb(55, 52, 184)
HSLhsl(241, 56%, 46%)
HSVhsv(241, 72%, 72%)
CMYKcmyk(70.1%, 71.7%, 0%, 27.8%)
CIE-LABlab(31.18, 43.60, -68.76)
CIE-LCHlch(31.18, 81.42, 302.38°)
OKLaboklab(42.52% 0.0167 -0.1988)
OKLCHoklch(42.52% 0.199 274.8)
XYZxyz(11.4524, 6.7278, 46.0332)
Luminance0.0673 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3734B8 #B5B834
analogous
#3473B8 #3734B8 #7934B8
triadic
#3734B8 #B83734 #34B837
tetradic
#3734B8 #B83473 #B5B834 #34B879
square
#3734B8 #B83473 #B5B834 #34B879
split-complementary
#3734B8 #B87934 #73B834
monochromatic
#1A1959 #292788 #3734B8 #5C59D0 #8B89DE

Accessibility & contrast

On white

8.95
#3734B8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.35
#3734B8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734B8
8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3734B8#FFFFFF#000000##FFFFFF
##3734B81.008.952.358.95
#FFFFFF8.951.0021.001.00
#0000002.3521.001.0021.00
##FFFFFF8.951.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004FBC
Deuteranopia (green-blind)
#0043B6
Tritanopia (blue-blind)
#005972
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #3734b8;
/* rgb */ color: rgb(55, 52, 184);
/* oklch */ color: oklch(42.5% 0.199 274.8);
Tailwind
colors: {
  custom: {
    50: '#806dcf',
    500: '#3734b8',
    950: '#000000',
  },
}
SCSS
$custom: #3734b8;
$custom-light: #806dcf;
$custom-dark: #000000;
JSON
{
  "hex": "#3734b8",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 184
  },
  "hsl": {
    "h": 241.364,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42519,
    "c": 0.19948,
    "h": 274.8
  },
  "luminance": 0.06729
}

Semantic roles & 50–950 ramp

primary
#3734B8
secondary
#C6C880
accent
#DF49DC
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0714
muted
#7D7A82

Preview Lab

Preview with #3734B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3734B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva