#3543B1#3543B1

#3543B1 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.2% C 0.174 H 271.7°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#3543B1
RGB	rgb(53, 67, 177)
HSL	hsl(233, 54%, 45%)
HSV	hsv(233, 70%, 69%)
CMYK	cmyk(70.1%, 62.1%, 0%, 30.6%)
CIE-LAB	lab(33.87, 31.70, -60.21)
CIE-LCH	lch(33.87, 68.04, 297.77°)
OKLab	oklab(44.25% 0.0051 -0.1737)
OKLCH	oklch(44.25% 0.174 271.7)
XYZ	xyz(11.4085, 7.9444, 42.5186)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3543B1 #B1A335

analogous

#3581B1 #3543B1 #6535B1

triadic

#3543B1 #B13543 #43B135

tetradic

#3543B1 #B13581 #B1A335 #35B165

square

#3543B1 #B13581 #B1A335 #35B165

split-complementary

#3543B1 #B16535 #81B135

monochromatic

#191F53 #273182 #3543B1 #5764CD #868FDB

Accessibility & contrast

On white

8.11

#3543B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3543B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3543B1

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3543B1	#FFFFFF	#000000	##FFFFFF
##3543B1	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B5

Deuteranopia (green-blind)

#004AAF

Tritanopia (blue-blind)

#005F73

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3543b1;
/* rgb */ color: rgb(53, 67, 177);
/* oklch */ color: oklch(44.2% 0.174 271.7);

Tailwind

colors: {
  custom: {
    50: '#7d77c9',
    500: '#3543b1',
    950: '#000000',
  },
}

SCSS

$custom: #3543b1;
$custom-light: #7d77c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3543b1",
  "rgb": {
    "r": 53,
    "g": 67,
    "b": 177
  },
  "hsl": {
    "h": 233.226,
    "s": 53.913,
    "l": 45.098
  },
  "oklch": {
    "l": 0.44245,
    "c": 0.17382,
    "h": 271.7
  },
  "luminance": 0.07946
}

Semantic roles & 50–950 ramp

primary

#3543B1

secondary

#C4BC7D

accent

#CD4BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3543B1

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

Preview Lab → · Contrast checker → · Palette generator →