#3539B1#3539B1

#3539B1 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.186 H 273.8°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#3539B1
RGB	rgb(53, 57, 177)
HSL	hsl(238, 54%, 45%)
HSV	hsv(238, 70%, 69%)
CMYK	cmyk(70.1%, 67.8%, 0%, 30.6%)
CIE-LAB	lab(31.48, 38.01, -64.12)
CIE-LCH	lch(31.48, 74.54, 300.66°)
OKLab	oklab(42.5% 0.0122 -0.1853)
OKLCH	oklch(42.5% 0.186 273.8)
XYZ	xyz(10.8645, 6.8564, 42.3373)
Luminance	0.0686 (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

#3539B1 #B1AD35

analogous

#3577B1 #3539B1 #6F35B1

triadic

#3539B1 #B13539 #39B135

tetradic

#3539B1 #B13577 #B1AD35 #35B16F

square

#3539B1 #B13577 #B1AD35 #35B16F

split-complementary

#3539B1 #B16F35 #77B135

monochromatic

#191B53 #272A82 #3539B1 #575ACD #8688DB

Accessibility & contrast

On white

8.86

#3539B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3539B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3539B1

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3539B1	#FFFFFF	#000000	##FFFFFF
##3539B1	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B5

Deuteranopia (green-blind)

#0044AF

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3539b1;
/* rgb */ color: rgb(53, 57, 177);
/* oklch */ color: oklch(42.5% 0.186 273.8);

Tailwind

colors: {
  custom: {
    50: '#7d70c9',
    500: '#3539b1',
    950: '#000000',
  },
}

SCSS

$custom: #3539b1;
$custom-light: #7d70c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3539b1",
  "rgb": {
    "r": 53,
    "g": 57,
    "b": 177
  },
  "hsl": {
    "h": 238.065,
    "s": 53.913,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42498,
    "c": 0.18566,
    "h": 273.8
  },
  "luminance": 0.06857
}

Semantic roles & 50–950 ramp

primary

#3539B1

secondary

#C4C27D

accent

#D94BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3539B1

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

Preview Lab → · Contrast checker → · Palette generator →