#3437B9#3437B9

#3437B9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.198 H 273.3°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX#3437B9
RGBrgb(52, 55, 185)
HSLhsl(239, 56%, 46%)
HSVhsv(239, 72%, 73%)
CMYKcmyk(71.9%, 70.3%, 0%, 27.5%)
CIE-LABlab(31.73, 41.85, -68.46)
CIE-LCHlch(31.73, 80.24, 301.44°)
OKLaboklab(42.89% 0.0113 -0.198)
OKLCHoklch(42.89% 0.198 273.3)
XYZxyz(11.5364, 6.9641, 46.6258)
Luminance0.0697 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3437B9 #B9B634
analogous
#347AB9 #3437B9 #7434B9
triadic
#3437B9 #B93437 #37B934
tetradic
#3437B9 #B9347A #B9B634 #34B974
square
#3437B9 #B9347A #B9B634 #34B974
split-complementary
#3437B9 #B97434 #7AB934
monochromatic
#191B59 #272989 #3437B9 #5A5CD1 #898BDE

Accessibility & contrast

On white

8.78
#3437B9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.39
#3437B9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437B9
8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3437B9#FFFFFF#000000##FFFFFF
##3437B91.008.782.398.78
#FFFFFF8.781.0021.001.00
#0000002.3921.001.0021.00
##FFFFFF8.781.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0051BD
Deuteranopia (green-blind)
#0044B7
Tritanopia (blue-blind)
#005B74
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #3437b9;
/* rgb */ color: rgb(52, 55, 185);
/* oklch */ color: oklch(42.9% 0.198 273.3);
Tailwind
colors: {
  custom: {
    50: '#7f6fcf',
    500: '#3437b9',
    950: '#000000',
  },
}
SCSS
$custom: #3437b9;
$custom-light: #7f6fcf;
$custom-dark: #000000;
JSON
{
  "hex": "#3437b9",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 185
  },
  "hsl": {
    "h": 238.647,
    "s": 56.118,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42889,
    "c": 0.19831,
    "h": 273.3
  },
  "luminance": 0.06965
}

Semantic roles & 50–950 ramp

primary
#3437B9
secondary
#C8C681
accent
#DC48DF
background
#F8F6FC
surface
#F0ECF9
border
#CBC7D2
text
#0C0714
muted
#7D7A82

Preview Lab

Preview with #3437B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3437B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva