#3937AA#3937AA

#3937AA is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.8% C 0.178 H 276.2°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#3937AA
RGB	rgb(57, 55, 170)
HSL	hsl(241, 51%, 44%)
HSV	hsv(241, 68%, 67%)
CMYK	cmyk(66.5%, 67.6%, 0%, 33.3%)
CIE-LAB	lab(30.65, 37.36, -61.28)
CIE-LCH	lch(30.65, 71.77, 301.37°)
OKLab	oklab(41.77% 0.0192 -0.1769)
OKLCH	oklch(41.77% 0.178 276.2)
XYZ	xyz(10.3069, 6.5036, 38.7346)
Luminance	0.0650 (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

#3937AA #A8AA37

analogous

#376FAA #3937AA #7237AA

triadic

#3937AA #AA3937 #37AA39

tetradic

#3937AA #AA376F #A8AA37 #37AA72

square

#3937AA #AA376F #A8AA37 #37AA72

split-complementary

#3937AA #AA7237 #6FAA37

monochromatic

#1A194E #29287C #3937AA #5856C8 #8684D7

Accessibility & contrast

On white

9.13

#3937AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3937AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937AA

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937AA	#FFFFFF	#000000	##FFFFFF
##3937AA	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAE

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#00556C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3937aa;
/* rgb */ color: rgb(57, 55, 170);
/* oklch */ color: oklch(41.8% 0.178 276.2);

Tailwind

colors: {
  custom: {
    50: '#7e6ec4',
    500: '#3937aa',
    950: '#000000',
  },
}

SCSS

$custom: #3937aa;
$custom-light: #7e6ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3937aa",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 170
  },
  "hsl": {
    "h": 241.043,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.41772,
    "c": 0.17791,
    "h": 276.2
  },
  "luminance": 0.06505
}

Semantic roles & 50–950 ramp

primary

#3937AA

secondary

#C0C17C

accent

#DB4DD8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3937AA

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

Preview Lab → · Contrast checker → · Palette generator →