#3937BD#3937BD

#3937BD is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.6% C 0.202 H 274.7°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#3937BD
RGB	rgb(57, 55, 189)
HSL	hsl(241, 55%, 48%)
HSV	hsv(241, 71%, 74%)
CMYK	cmyk(69.8%, 70.9%, 0%, 25.9%)
CIE-LAB	lab(32.43, 43.73, -69.66)
CIE-LCH	lch(32.43, 82.25, 302.12°)
OKLab	oklab(43.59% 0.0166 -0.2014)
OKLCH	oklch(43.59% 0.202 274.7)
XYZ	xyz(12.2358, 7.2752, 48.8937)
Luminance	0.0728 (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

#3937BD #BBBD37

analogous

#3778BD #3937BD #7C37BD

triadic

#3937BD #BD3937 #37BD39

tetradic

#3937BD #BD3778 #BBBD37 #37BD7C

square

#3937BD #BD3778 #BBBD37 #37BD7C

split-complementary

#3937BD #BD7C37 #78BD37

monochromatic

#1C1B5E #2B298E #3937BD #6260D1 #9190DF

Accessibility & contrast

On white

8.55

#3937BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3937BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937BD

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937BD	#FFFFFF	#000000	##FFFFFF
##3937BD	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C1

Deuteranopia (green-blind)

#0046BB

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3937bd;
/* rgb */ color: rgb(57, 55, 189);
/* oklch */ color: oklch(43.6% 0.202 274.7);

Tailwind

colors: {
  custom: {
    50: '#826fd2',
    500: '#3937bd',
    950: '#000000',
  },
}

SCSS

$custom: #3937bd;
$custom-light: #826fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3937bd",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 189
  },
  "hsl": {
    "h": 240.896,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.43591,
    "c": 0.20204,
    "h": 274.7
  },
  "luminance": 0.07276
}

Semantic roles & 50–950 ramp

primary

#3937BD

secondary

#C8C986

accent

#DE4ADC

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3937BD

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

Preview Lab → · Contrast checker → · Palette generator →