#3931AB#3931AB

#3931AB is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.9% C 0.186 H 277.2°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#3931AB
RGB	rgb(57, 49, 171)
HSL	hsl(244, 55%, 43%)
HSV	hsv(244, 71%, 67%)
CMYK	cmyk(66.7%, 71.3%, 0%, 32.9%)
CIE-LAB	lab(29.43, 41.28, -63.89)
CIE-LCH	lch(29.43, 76.07, 302.87°)
OKLab	oklab(40.92% 0.0233 -0.1845)
OKLCH	oklch(40.92% 0.186 277.2)
XYZ	xyz(10.1340, 6.0059, 39.1454)
Luminance	0.0601 (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

#3931AB #A3AB31

analogous

#3166AB #3931AB #7631AB

triadic

#3931AB #AB3931 #31AB39

tetradic

#3931AB #AB3166 #A3AB31 #31AB76

square

#3931AB #AB3166 #A3AB31 #31AB76

split-complementary

#3931AB #AB7631 #66AB31

monochromatic

#19164C #29237B #3931AB #554DCC #837DDA

Accessibility & contrast

On white

9.54

#3931AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#3931AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3931AB

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3931AB	#FFFFFF	#000000	##FFFFFF
##3931AB	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAF

Deuteranopia (green-blind)

#0040A9

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3931ab;
/* rgb */ color: rgb(57, 49, 171);
/* oklch */ color: oklch(40.9% 0.186 277.2);

Tailwind

colors: {
  custom: {
    50: '#7f6ac5',
    500: '#3931ab',
    950: '#000000',
  },
}

SCSS

$custom: #3931ab;
$custom-light: #7f6ac5;
$custom-dark: #000000;

JSON

{
  "hex": "#3931ab",
  "rgb": {
    "r": 57,
    "g": 49,
    "b": 171
  },
  "hsl": {
    "h": 243.934,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40921,
    "c": 0.18596,
    "h": 277.2
  },
  "luminance": 0.06007
}

Semantic roles & 50–950 ramp

primary

#3931AB

secondary

#BDC275

accent

#DF49D5

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3931AB

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

Preview Lab → · Contrast checker → · Palette generator →