#3937BA#3937BA

#3937BA is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.3% C 0.198 H 274.9°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#3937BA
RGB	rgb(57, 55, 186)
HSL	hsl(241, 54%, 47%)
HSV	hsv(241, 70%, 73%)
CMYK	cmyk(69.4%, 70.4%, 0%, 27.1%)
CIE-LAB	lab(32.14, 42.74, -68.36)
CIE-LCH	lch(32.14, 80.62, 302.01°)
OKLab	oklab(43.3% 0.017 -0.1976)
OKLCH	oklch(43.3% 0.198 274.9)
XYZ	xyz(11.9135, 7.1463, 47.1964)
Luminance	0.0715 (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

#3937BA #B8BA37

analogous

#3777BA #3937BA #7B37BA

triadic

#3937BA #BA3937 #37BA39

tetradic

#3937BA #BA3777 #B8BA37 #37BA7B

square

#3937BA #BA3777 #B8BA37 #37BA7B

split-complementary

#3937BA #BA7B37 #77BA37

monochromatic

#1C1B5C #2B298B #3937BA #605FD0 #8F8EDE

Accessibility & contrast

On white

8.64

#3937BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3937BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937BA

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937BA	#FFFFFF	#000000	##FFFFFF
##3937BA	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BE

Deuteranopia (green-blind)

#0046B8

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3937ba;
/* rgb */ color: rgb(57, 55, 186);
/* oklch */ color: oklch(43.3% 0.198 274.9);

Tailwind

colors: {
  custom: {
    50: '#816fd0',
    500: '#3937ba',
    950: '#000000',
  },
}

SCSS

$custom: #3937ba;
$custom-light: #816fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3937ba",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 186
  },
  "hsl": {
    "h": 240.916,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43298,
    "c": 0.1983,
    "h": 274.9
  },
  "luminance": 0.07147
}

Semantic roles & 50–950 ramp

primary

#3937BA

secondary

#C7C885

accent

#DE4ADB

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3937BA

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

Preview Lab → · Contrast checker → · Palette generator →