#3937A9#3937A9

#3937A9 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.177 H 276.3°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#3937A9
RGB	rgb(57, 55, 169)
HSL	hsl(241, 51%, 44%)
HSV	hsv(241, 67%, 66%)
CMYK	cmyk(66.3%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(30.56, 37.02, -60.83)
CIE-LCH	lch(30.56, 71.21, 301.32°)
OKLab	oklab(41.68% 0.0193 -0.1755)
OKLCH	oklch(41.68% 0.177 276.3)
XYZ	xyz(10.2126, 6.4659, 38.2383)
Luminance	0.0647 (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

#3937A9 #A7A937

analogous

#376EA9 #3937A9 #7237A9

triadic

#3937A9 #A93937 #37A939

tetradic

#3937A9 #A9376E #A7A937 #37A972

square

#3937A9 #A9376E #A7A937 #37A972

split-complementary

#3937A9 #A97237 #6EA937

monochromatic

#1A194D #29287B #3937A9 #5755C8 #8584D7

Accessibility & contrast

On white

9.16

#3937A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3937A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937A9

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937A9	#FFFFFF	#000000	##FFFFFF
##3937A9	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAD

Deuteranopia (green-blind)

#0043A7

Tritanopia (blue-blind)

#00556B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3937a9;
/* rgb */ color: rgb(57, 55, 169);
/* oklch */ color: oklch(41.7% 0.177 276.3);

Tailwind

colors: {
  custom: {
    50: '#7e6ec4',
    500: '#3937a9',
    950: '#000000',
  },
}

SCSS

$custom: #3937a9;
$custom-light: #7e6ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3937a9",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 241.053,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41679,
    "c": 0.1766,
    "h": 276.3
  },
  "luminance": 0.06467
}

Semantic roles & 50–950 ramp

primary

#3937A9

secondary

#BFC07B

accent

#DA4DD8

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3937A9

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

Preview Lab → · Contrast checker → · Palette generator →