#3937C1#3937C1

#3937C1 is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.0% C 0.207 H 274.4°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#3937C1
RGB	rgb(57, 55, 193)
HSL	hsl(241, 56%, 49%)
HSV	hsv(241, 72%, 76%)
CMYK	cmyk(70.5%, 71.5%, 0%, 24.3%)
CIE-LAB	lab(32.81, 45.06, -71.38)
CIE-LCH	lch(32.81, 84.41, 302.26°)
OKLab	oklab(43.99% 0.016 -0.2064)
OKLCH	oklch(43.99% 0.207 274.4)
XYZ	xyz(12.6760, 7.4513, 51.2119)
Luminance	0.0745 (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

#3937C1 #BFC137

analogous

#377AC1 #3937C1 #7E37C1

triadic

#3937C1 #C13937 #37C139

tetradic

#3937C1 #C1377A #BFC137 #37C17E

square

#3937C1 #C1377A #BFC137 #37C17E

split-complementary

#3937C1 #C17E37 #7AC137

monochromatic

#1D1C62 #2B2991 #3937C1 #6463D2 #9392E0

Accessibility & contrast

On white

8.43

#3937C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3937C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937C1

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937C1	#FFFFFF	#000000	##FFFFFF
##3937C1	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C5

Deuteranopia (green-blind)

#0047BE

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3937c1;
/* rgb */ color: rgb(57, 55, 193);
/* oklch */ color: oklch(44.0% 0.207 274.4);

Tailwind

colors: {
  custom: {
    50: '#836fd5',
    500: '#3937c1',
    950: '#000000',
  },
}

SCSS

$custom: #3937c1;
$custom-light: #836fd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3937c1",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 193
  },
  "hsl": {
    "h": 240.87,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.43986,
    "c": 0.20699,
    "h": 274.4
  },
  "luminance": 0.07452
}

Semantic roles & 50–950 ramp

primary

#3937C1

secondary

#CACB89

accent

#DF49DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3937C1

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

Preview Lab → · Contrast checker → · Palette generator →