#3543B9#3543B9

#3543B9 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 45.0% C 0.184 H 271.5°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#3543B9
RGB	rgb(53, 67, 185)
HSL	hsl(234, 55%, 47%)
HSV	hsv(234, 71%, 73%)
CMYK	cmyk(71.4%, 63.8%, 0%, 27.5%)
CIE-LAB	lab(34.54, 34.56, -63.83)
CIE-LCH	lch(34.54, 72.59, 298.43°)
OKLab	oklab(44.95% 0.0047 -0.1844)
OKLCH	oklch(44.95% 0.184 271.5)
XYZ	xyz(12.2293, 8.2728, 46.8418)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3543B9 #B9AB35

analogous

#3585B9 #3543B9 #6935B9

triadic

#3543B9 #B93543 #43B935

tetradic

#3543B9 #B93585 #B9AB35 #35B969

square

#3543B9 #B93585 #B9AB35 #35B969

split-complementary

#3543B9 #B96935 #85B935

monochromatic

#1A215A #273289 #3543B9 #5B68D0 #8B94DE

Accessibility & contrast

On white

7.91

#3543B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3543B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3543B9

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3543B9	#FFFFFF	#000000	##FFFFFF
##3543B9	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BD

Deuteranopia (green-blind)

#004BB7

Tritanopia (blue-blind)

#006278

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3543b9;
/* rgb */ color: rgb(53, 67, 185);
/* oklch */ color: oklch(45.0% 0.184 271.5);

Tailwind

colors: {
  custom: {
    50: '#7e77cf',
    500: '#3543b9',
    950: '#000000',
  },
}

SCSS

$custom: #3543b9;
$custom-light: #7e77cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3543b9",
  "rgb": {
    "r": 53,
    "g": 67,
    "b": 185
  },
  "hsl": {
    "h": 233.636,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44954,
    "c": 0.18444,
    "h": 271.5
  },
  "luminance": 0.08274
}

Semantic roles & 50–950 ramp

primary

#3543B9

secondary

#C8C082

accent

#CF49DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3543B9

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

Preview Lab → · Contrast checker → · Palette generator →