#3937A6#3937A6

#3937A6 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.4% C 0.173 H 276.5°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#3937A6
RGB	rgb(57, 55, 166)
HSL	hsl(241, 50%, 43%)
HSV	hsv(241, 67%, 65%)
CMYK	cmyk(65.7%, 66.9%, 0%, 34.9%)
CIE-LAB	lab(30.29, 36.00, -59.47)
CIE-LCH	lch(30.29, 69.51, 301.19°)
OKLab	oklab(41.4% 0.0197 -0.1715)
OKLCH	oklch(41.4% 0.173 276.5)
XYZ	xyz(9.9342, 6.3546, 36.7720)
Luminance	0.0635 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3937A6 #A4A637

analogous

#376CA6 #3937A6 #7037A6

triadic

#3937A6 #A63937 #37A639

tetradic

#3937A6 #A6376C #A4A637 #37A670

square

#3937A6 #A6376C #A4A637 #37A670

split-complementary

#3937A6 #A67037 #6CA637

monochromatic

#19194A #292878 #3937A6 #5654C6 #8382D6

Accessibility & contrast

On white

9.25

#3937A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#3937A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3937A6

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3937A6	#FFFFFF	#000000	##FFFFFF
##3937A6	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA9

Deuteranopia (green-blind)

#0042A4

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3937a6;
/* rgb */ color: rgb(57, 55, 166);
/* oklch */ color: oklch(41.4% 0.173 276.5);

Tailwind

colors: {
  custom: {
    50: '#7d6ec1',
    500: '#3937a6',
    950: '#000000',
  },
}

SCSS

$custom: #3937a6;
$custom-light: #7d6ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#3937a6",
  "rgb": {
    "r": 57,
    "g": 55,
    "b": 166
  },
  "hsl": {
    "h": 241.081,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41401,
    "c": 0.17267,
    "h": 276.5
  },
  "luminance": 0.06355
}

Semantic roles & 50–950 ramp

primary

#3937A6

secondary

#BEBF7A

accent

#DA4ED7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3937A6

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

Preview Lab → · Contrast checker → · Palette generator →