#3937AC#3937AC

#3937AC is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.0% C 0.180 H 276.0°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#3937AC
RGB	rgb(57, 55, 172)
HSL	hsl(241, 52%, 45%)
HSV	hsv(241, 68%, 67%)
CMYK	cmyk(66.9%, 68%, 0%, 32.5%)
CIE-LAB	lab(30.83, 38.04, -62.18)
CIE-LCH	lch(30.83, 72.90, 301.45°)
OKLab	oklab(41.96% 0.019 -0.1795)
OKLCH	oklch(41.96% 0.181 276)
XYZ	xyz(10.4975, 6.5799, 39.7386)
Luminance	0.0658 (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

#3937AC #AAAC37

analogous

#376FAC #3937AC #7437AC

triadic

#3937AC #AC3937 #37AC39

tetradic

#3937AC #AC376F #AAAC37 #37AC74

square

#3937AC #AC376F #AAAC37 #37AC74

split-complementary

#3937AC #AC7437 #6FAC37

monochromatic

#1A194F #2A287E #3937AC #5957C9 #8785D8

Accessibility & contrast

On white

9.07

#3937AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3937AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937AC

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937AC	#FFFFFF	#000000	##FFFFFF
##3937AC	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3937ac;
/* rgb */ color: rgb(57, 55, 172);
/* oklch */ color: oklch(42.0% 0.180 276.0);

Tailwind

colors: {
  custom: {
    50: '#7e6ec6',
    500: '#3937ac',
    950: '#000000',
  },
}

SCSS

$custom: #3937ac;
$custom-light: #7e6ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3937ac",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 172
  },
  "hsl": {
    "h": 241.026,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41959,
    "c": 0.1805,
    "h": 276
  },
  "luminance": 0.06581
}

Semantic roles & 50–950 ramp

primary

#3937AC

secondary

#C1C27D

accent

#DB4DD9

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3937AC

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

Preview Lab → · Contrast checker → · Palette generator →