#3543B8#3543B8

#3543B8 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.9% C 0.183 H 271.5°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX#3543B8
RGBrgb(53, 67, 184)
HSLhsl(234, 55%, 46%)
HSVhsv(234, 71%, 72%)
CMYKcmyk(71.2%, 63.6%, 0%, 27.8%)
CIE-LABlab(34.46, 34.20, -63.39)
CIE-LCHlch(34.46, 72.02, 298.35°)
OKLaboklab(44.86% 0.0048 -0.1831)
OKLCHoklch(44.86% 0.183 271.5)
XYZxyz(12.1242, 8.2307, 46.2878)
Luminance0.0823 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3543B8 #B8AA35
analogous
#3585B8 #3543B8 #6935B8
triadic
#3543B8 #B83543 #43B835
tetradic
#3543B8 #B83585 #B8AA35 #35B869
square
#3543B8 #B83585 #B8AA35 #35B869
split-complementary
#3543B8 #B86935 #85B835
monochromatic
#1A2059 #273288 #3543B8 #5B67D0 #8A93DD

Accessibility & contrast

On white

7.94
#3543B8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.65
#3543B8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3543B8
7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3543B8#FFFFFF#000000##FFFFFF
##3543B81.007.942.657.94
#FFFFFF7.941.0021.001.00
#0000002.6521.001.0021.00
##FFFFFF7.941.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0057BC
Deuteranopia (green-blind)
#004BB6
Tritanopia (blue-blind)
#006177
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #3543b8;
/* rgb */ color: rgb(53, 67, 184);
/* oklch */ color: oklch(44.9% 0.183 271.5);
Tailwind
colors: {
  custom: {
    50: '#7e77ce',
    500: '#3543b8',
    950: '#000000',
  },
}
SCSS
$custom: #3543b8;
$custom-light: #7e77ce;
$custom-dark: #000000;
JSON
{
  "hex": "#3543b8",
  "rgb": {
    "r": 53,
    "g": 67,
    "b": 184
  },
  "hsl": {
    "h": 233.588,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44864,
    "c": 0.18313,
    "h": 271.5
  },
  "luminance": 0.08232
}

Semantic roles & 50–950 ramp

primary
#3543B8
secondary
#C7C081
accent
#CF49DF
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0B0814
muted
#7C7B82

Preview Lab

Preview with #3543B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3543B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva