#3931B4#3931B4

#3931B4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.197 H 276.3°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#3931B4
RGB	rgb(57, 49, 180)
HSL	hsl(244, 57%, 45%)
HSV	hsv(244, 73%, 71%)
CMYK	cmyk(68.3%, 72.8%, 0%, 29.4%)
CIE-LAB	lab(30.31, 44.23, -67.82)
CIE-LCH	lch(30.31, 80.97, 303.11°)
OKLab	oklab(41.81% 0.0217 -0.196)
OKLCH	oklch(41.81% 0.197 276.3)
XYZ	xyz(11.0212, 6.3608, 43.8181)
Luminance	0.0636 (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

#3931B4 #ACB431

analogous

#316BB4 #3931B4 #7A31B4

triadic

#3931B4 #B43931 #31B439

tetradic

#3931B4 #B4316B #ACB431 #31B47A

square

#3931B4 #B4316B #ACB431 #31B47A

split-complementary

#3931B4 #B47A31 #6BB431

monochromatic

#1B1754 #2A2484 #3931B4 #5A52D0 #8882DD

Accessibility & contrast

On white

9.24

#3931B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#3931B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3931B4

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3931B4	#FFFFFF	#000000	##FFFFFF
##3931B4	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB8

Deuteranopia (green-blind)

#0042B2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3931b4;
/* rgb */ color: rgb(57, 49, 180);
/* oklch */ color: oklch(41.8% 0.197 276.3);

Tailwind

colors: {
  custom: {
    50: '#806bcc',
    500: '#3931b4',
    950: '#000000',
  },
}

SCSS

$custom: #3931b4;
$custom-light: #806bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3931b4",
  "rgb": {
    "r": 57,
    "g": 49,
    "b": 180
  },
  "hsl": {
    "h": 243.664,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41813,
    "c": 0.19717,
    "h": 276.3
  },
  "luminance": 0.06362
}

Semantic roles & 50–950 ramp

primary

#3931B4

secondary

#C2C67B

accent

#E047D7

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3931B4

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

Preview Lab → · Contrast checker → · Palette generator →