#3931BF#3931BF

#3931BF is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.9% C 0.211 H 275.3°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#3931BF
RGB	rgb(57, 49, 191)
HSL	hsl(243, 59%, 47%)
HSV	hsv(243, 74%, 75%)
CMYK	cmyk(70.2%, 74.3%, 0%, 25.1%)
CIE-LAB	lab(31.41, 47.77, -72.51)
CIE-LCH	lch(31.41, 86.84, 303.38°)
OKLab	oklab(42.93% 0.0196 -0.2096)
OKLCH	oklch(42.93% 0.211 275.3)
XYZ	xyz(12.1865, 6.8269, 49.9556)
Luminance	0.0683 (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

#3931BF #B7BF31

analogous

#3170BF #3931BF #8031BF

triadic

#3931BF #BF3931 #31BF39

tetradic

#3931BF #BF3170 #B7BF31 #31BF80

square

#3931BF #BF3170 #B7BF31 #31BF80

split-complementary

#3931BF #BF8031 #70BF31

monochromatic

#1C185E #2A258E #3931BF #6059D4 #8E8AE1

Accessibility & contrast

On white

8.88

#3931BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3931BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3931BF

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3931BF	#FFFFFF	#000000	##FFFFFF
##3931BF	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C3

Deuteranopia (green-blind)

#0043BC

Tritanopia (blue-blind)

#005A76

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3931bf;
/* rgb */ color: rgb(57, 49, 191);
/* oklch */ color: oklch(42.9% 0.211 275.3);

Tailwind

colors: {
  custom: {
    50: '#836bd4',
    500: '#3931bf',
    950: '#000000',
  },
}

SCSS

$custom: #3931bf;
$custom-light: #836bd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3931bf",
  "rgb": {
    "r": 57,
    "g": 49,
    "b": 191
  },
  "hsl": {
    "h": 243.38,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.42928,
    "c": 0.21056,
    "h": 275.3
  },
  "luminance": 0.06828
}

Semantic roles & 50–950 ramp

primary

#3931BF

secondary

#C7CB81

accent

#E245DA

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3931BF

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

Preview Lab → · Contrast checker → · Palette generator →