#3937AD#3937AD

#3937AD is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.1% C 0.182 H 276.0°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#3937AD
RGB	rgb(57, 55, 173)
HSL	hsl(241, 52%, 45%)
HSV	hsv(241, 68%, 68%)
CMYK	cmyk(67.1%, 68.2%, 0%, 32.2%)
CIE-LAB	lab(30.92, 38.38, -62.63)
CIE-LCH	lch(30.92, 73.46, 301.50°)
OKLab	oklab(42.05% 0.0189 -0.1808)
OKLCH	oklch(42.05% 0.182 276)
XYZ	xyz(10.5939, 6.6184, 40.2463)
Luminance	0.0662 (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

#3937AD #ABAD37

analogous

#3770AD #3937AD #7437AD

triadic

#3937AD #AD3937 #37AD39

tetradic

#3937AD #AD3770 #ABAD37 #37AD74

square

#3937AD #AD3770 #ABAD37 #37AD74

split-complementary

#3937AD #AD7437 #70AD37

monochromatic

#1A1950 #2A287F #3937AD #5957CA #8786D8

Accessibility & contrast

On white

9.04

#3937AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3937AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937AD

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937AD	#FFFFFF	#000000	##FFFFFF
##3937AD	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB1

Deuteranopia (green-blind)

#0044AB

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3937ad;
/* rgb */ color: rgb(57, 55, 173);
/* oklch */ color: oklch(42.1% 0.182 276.0);

Tailwind

colors: {
  custom: {
    50: '#7e6ec6',
    500: '#3937ad',
    950: '#000000',
  },
}

SCSS

$custom: #3937ad;
$custom-light: #7e6ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3937ad",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 173
  },
  "hsl": {
    "h": 241.017,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42053,
    "c": 0.1818,
    "h": 276
  },
  "luminance": 0.06619
}

Semantic roles & 50–950 ramp

primary

#3937AD

secondary

#C1C27D

accent

#DB4DD9

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3937AD

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

Preview Lab → · Contrast checker → · Palette generator →