#3537B8#3537B8

#3537B8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.197 H 273.7°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#3537B8
RGB	rgb(53, 55, 184)
HSL	hsl(239, 55%, 46%)
HSV	hsv(239, 71%, 72%)
CMYK	cmyk(71.2%, 70.1%, 0%, 27.8%)
CIE-LAB	lab(31.69, 41.62, -67.93)
CIE-LCH	lch(31.69, 79.66, 301.50°)
OKLab	oklab(42.85% 0.0126 -0.1964)
OKLCH	oklch(42.85% 0.197 273.7)
XYZ	xyz(11.4832, 6.9488, 46.0742)
Luminance	0.0695 (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

#3537B8 #B8B635

analogous

#3579B8 #3537B8 #7535B8

triadic

#3537B8 #B83537 #37B835

tetradic

#3537B8 #B83579 #B8B635 #35B875

square

#3537B8 #B83579 #B8B635 #35B875

split-complementary

#3537B8 #B87535 #79B835

monochromatic

#1A1B59 #272988 #3537B8 #5B5CD0 #8A8BDD

Accessibility & contrast

On white

8.79

#3537B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3537B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3537B8

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3537B8	#FFFFFF	#000000	##FFFFFF
##3537B8	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0044B6

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3537b8;
/* rgb */ color: rgb(53, 55, 184);
/* oklch */ color: oklch(42.9% 0.197 273.7);

Tailwind

colors: {
  custom: {
    50: '#7f6fce',
    500: '#3537b8',
    950: '#000000',
  },
}

SCSS

$custom: #3537b8;
$custom-light: #7f6fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3537b8",
  "rgb": {
    "r": 53,
    "g": 55,
    "b": 184
  },
  "hsl": {
    "h": 239.084,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42851,
    "c": 0.1968,
    "h": 273.7
  },
  "luminance": 0.0695
}

Semantic roles & 50–950 ramp

primary

#3537B8

secondary

#C7C681

accent

#DC49DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3537B8

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

Preview Lab → · Contrast checker → · Palette generator →