#3937C0#3937C0

#3937C0 is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 43.9% C 0.206 H 274.5°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#3937C0
RGB	rgb(57, 55, 192)
HSL	hsl(241, 55%, 48%)
HSV	hsv(241, 71%, 75%)
CMYK	cmyk(70.3%, 71.4%, 0%, 24.7%)
CIE-LAB	lab(32.72, 44.73, -70.95)
CIE-LCH	lch(32.72, 83.87, 302.23°)
OKLab	oklab(43.89% 0.0161 -0.2051)
OKLCH	oklch(43.89% 0.206 274.5)
XYZ	xyz(12.5648, 7.4068, 50.6264)
Luminance	0.0741 (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

#3937C0 #BEC037

analogous

#3779C0 #3937C0 #7D37C0

triadic

#3937C0 #C03937 #37C039

tetradic

#3937C0 #C03779 #BEC037 #37C07D

square

#3937C0 #C03779 #BEC037 #37C07D

split-complementary

#3937C0 #C07D37 #79C037

monochromatic

#1D1C61 #2B2990 #3937C0 #6462D2 #9392E0

Accessibility & contrast

On white

8.46

#3937C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#3937C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937C0

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937C0	#FFFFFF	#000000	##FFFFFF
##3937C0	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C4

Deuteranopia (green-blind)

#0047BD

Tritanopia (blue-blind)

#005D78

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3937c0;
/* rgb */ color: rgb(57, 55, 192);
/* oklch */ color: oklch(43.9% 0.206 274.5);

Tailwind

colors: {
  custom: {
    50: '#836fd4',
    500: '#3937c0',
    950: '#000000',
  },
}

SCSS

$custom: #3937c0;
$custom-light: #836fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3937c0",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 192
  },
  "hsl": {
    "h": 240.876,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43887,
    "c": 0.20575,
    "h": 274.5
  },
  "luminance": 0.07408
}

Semantic roles & 50–950 ramp

primary

#3937C0

secondary

#CACB88

accent

#DF49DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3937C0

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

Preview Lab → · Contrast checker → · Palette generator →