#3937BF#3937BF

#3937BF is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 43.8% C 0.205 H 274.6°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#3937BF
RGB	rgb(57, 55, 191)
HSL	hsl(241, 55%, 48%)
HSV	hsv(241, 71%, 75%)
CMYK	cmyk(70.2%, 71.2%, 0%, 25.1%)
CIE-LAB	lab(32.62, 44.40, -70.52)
CIE-LCH	lch(32.62, 83.33, 302.19°)
OKLab	oklab(43.79% 0.0163 -0.2039)
OKLCH	oklch(43.79% 0.205 274.6)
XYZ	xyz(12.4544, 7.3626, 50.0449)
Luminance	0.0736 (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

#3937BF #BDBF37

analogous

#3779BF #3937BF #7D37BF

triadic

#3937BF #BF3937 #37BF39

tetradic

#3937BF #BF3779 #BDBF37 #37BF7D

square

#3937BF #BF3779 #BDBF37 #37BF7D

split-complementary

#3937BF #BF7D37 #79BF37

monochromatic

#1D1C60 #2B298F #3937BF #6362D2 #9291DF

Accessibility & contrast

On white

8.49

#3937BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3937BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937BF

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937BF	#FFFFFF	#000000	##FFFFFF
##3937BF	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C3

Deuteranopia (green-blind)

#0046BD

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3937bf;
/* rgb */ color: rgb(57, 55, 191);
/* oklch */ color: oklch(43.8% 0.205 274.6);

Tailwind

colors: {
  custom: {
    50: '#826fd4',
    500: '#3937bf',
    950: '#000000',
  },
}

SCSS

$custom: #3937bf;
$custom-light: #826fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3937bf",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 191
  },
  "hsl": {
    "h": 240.882,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.43788,
    "c": 0.20452,
    "h": 274.6
  },
  "luminance": 0.07364
}

Semantic roles & 50–950 ramp

primary

#3937BF

secondary

#C9CA88

accent

#DF49DC

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3937BF

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

Preview Lab → · Contrast checker → · Palette generator →