#3543AB#3543AB

#3543AB is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.7% C 0.166 H 271.8°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#3543AB
RGB	rgb(53, 67, 171)
HSL	hsl(233, 53%, 44%)
HSV	hsv(233, 69%, 67%)
CMYK	cmyk(69%, 60.8%, 0%, 32.9%)
CIE-LAB	lab(33.37, 29.54, -57.44)
CIE-LCH	lch(33.37, 64.59, 297.22°)
OKLab	oklab(43.73% 0.0052 -0.1656)
OKLCH	oklch(43.73% 0.166 271.8)
XYZ	xyz(10.8236, 7.7104, 39.4380)
Luminance	0.0771 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3543AB #AB9D35

analogous

#357EAB #3543AB #6235AB

triadic

#3543AB #AB3543 #43AB35

tetradic

#3543AB #AB357E #AB9D35 #35AB62

square

#3543AB #AB357E #AB9D35 #35AB62

split-complementary

#3543AB #AB6235 #7EAB35

monochromatic

#181E4E #27317C #3543AB #5361CA #828CD8

Accessibility & contrast

On white

8.26

#3543AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3543AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3543AB

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3543AB	#FFFFFF	#000000	##FFFFFF
##3543AB	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054AE

Deuteranopia (green-blind)

#0049A9

Tritanopia (blue-blind)

#005D70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3543ab;
/* rgb */ color: rgb(53, 67, 171);
/* oklch */ color: oklch(43.7% 0.166 271.8);

Tailwind

colors: {
  custom: {
    50: '#7b77c5',
    500: '#3543ab',
    950: '#000000',
  },
}

SCSS

$custom: #3543ab;
$custom-light: #7b77c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3543ab",
  "rgb": {
    "r": 53,
    "g": 67,
    "b": 171
  },
  "hsl": {
    "h": 232.881,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43726,
    "c": 0.1657,
    "h": 271.8
  },
  "luminance": 0.07711
}

Semantic roles & 50–950 ramp

primary

#3543AB

secondary

#C2B97A

accent

#CB4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3543AB

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

Preview Lab → · Contrast checker → · Palette generator →