#3537B1#3537B1

#3537B1 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.2% C 0.188 H 274.1°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#3537B1
RGB	rgb(53, 55, 177)
HSL	hsl(239, 54%, 45%)
HSV	hsv(239, 70%, 69%)
CMYK	cmyk(70.1%, 68.9%, 0%, 30.6%)
CIE-LAB	lab(31.03, 39.24, -64.86)
CIE-LCH	lch(31.03, 75.80, 301.17°)
OKLab	oklab(42.17% 0.0135 -0.1874)
OKLCH	oklch(42.17% 0.188 274.1)
XYZ	xyz(10.7676, 6.6626, 42.3050)
Luminance	0.0666 (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

#3537B1 #B1AF35

analogous

#3575B1 #3537B1 #7135B1

triadic

#3537B1 #B13537 #37B135

tetradic

#3537B1 #B13575 #B1AF35 #35B171

square

#3537B1 #B13575 #B1AF35 #35B171

split-complementary

#3537B1 #B17135 #75B135

monochromatic

#191A53 #272882 #3537B1 #5759CD #8687DB

Accessibility & contrast

On white

9.00

#3537B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3537B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3537B1

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3537B1	#FFFFFF	#000000	##FFFFFF
##3537B1	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB5

Deuteranopia (green-blind)

#0043AF

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3537b1;
/* rgb */ color: rgb(53, 55, 177);
/* oklch */ color: oklch(42.2% 0.188 274.1);

Tailwind

colors: {
  custom: {
    50: '#7e6ec9',
    500: '#3537b1',
    950: '#000000',
  },
}

SCSS

$custom: #3537b1;
$custom-light: #7e6ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3537b1",
  "rgb": {
    "r": 53,
    "g": 55,
    "b": 177
  },
  "hsl": {
    "h": 239.032,
    "s": 53.913,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42171,
    "c": 0.18792,
    "h": 274.1
  },
  "luminance": 0.06664
}

Semantic roles & 50–950 ramp

primary

#3537B1

secondary

#C4C37D

accent

#DB4BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3537B1

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

Preview Lab → · Contrast checker → · Palette generator →