#3437B4#3437B4

#3437B4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.4% C 0.192 H 273.6°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX#3437B4
RGBrgb(52, 55, 180)
HSLhsl(239, 55%, 45%)
HSVhsv(239, 71%, 71%)
CMYKcmyk(71.1%, 69.4%, 0%, 29.4%)
CIE-LABlab(31.25, 40.14, -66.29)
CIE-LCHlch(31.25, 77.49, 301.20°)
OKLaboklab(42.4% 0.0119 -0.1916)
OKLCHoklch(42.4% 0.192 273.6)
XYZxyz(11.0178, 6.7567, 43.8947)
Luminance0.0676 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3437B4 #B4B134
analogous
#3477B4 #3437B4 #7134B4
triadic
#3437B4 #B43437 #37B434
tetradic
#3437B4 #B43477 #B4B134 #34B471
square
#3437B4 #B43477 #B4B134 #34B471
split-complementary
#3437B4 #B47134 #77B434
monochromatic
#191A55 #262885 #3437B4 #575ACE #8688DC

Accessibility & contrast

On white

8.93
#3437B4 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.35
#3437B4 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437B4
8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3437B4#FFFFFF#000000##FFFFFF
##3437B41.008.932.358.93
#FFFFFF8.931.0021.001.00
#0000002.3521.001.0021.00
##FFFFFF8.931.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0050B8
Deuteranopia (green-blind)
#0043B2
Tritanopia (blue-blind)
#005971
Achromatopsia (no color)
#4A4A4A

Design tokens & code

CSS
--color: #3437b4;
/* rgb */ color: rgb(52, 55, 180);
/* oklch */ color: oklch(42.4% 0.192 273.6);
Tailwind
colors: {
  custom: {
    50: '#7e6fcc',
    500: '#3437b4',
    950: '#000000',
  },
}
SCSS
$custom: #3437b4;
$custom-light: #7e6fcc;
$custom-dark: #000000;
JSON
{
  "hex": "#3437b4",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 180
  },
  "hsl": {
    "h": 238.594,
    "s": 55.172,
    "l": 45.49
  },
  "oklch": {
    "l": 0.424,
    "c": 0.192,
    "h": 273.6
  },
  "luminance": 0.06758
}

Semantic roles & 50–950 ramp

primary
#3437B4
secondary
#C6C47E
accent
#DB49DF
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #3437B4

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

Preview Lab → · Contrast checker → · Palette generator →

#3437B4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva