#3940B2#3940B2

#3940B2 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.0% C 0.178 H 273.8°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#3940B2
RGB	rgb(57, 64, 178)
HSL	hsl(237, 51%, 46%)
HSV	hsv(237, 68%, 70%)
CMYK	cmyk(68%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.46, 34.51, -61.46)
CIE-LCH	lch(33.46, 70.49, 299.31°)
OKLab	oklab(44.03% 0.0117 -0.1773)
OKLCH	oklch(44.03% 0.178 273.8)
XYZ	xyz(11.5539, 7.7499, 42.9978)
Luminance	0.0775 (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

#3940B2 #B2AB39

analogous

#397CB2 #3940B2 #6E39B2

triadic

#3940B2 #B23940 #40B239

tetradic

#3940B2 #B2397C #B2AB39 #39B26E

square

#3940B2 #B2397C #B2AB39 #39B26E

split-complementary

#3940B2 #B26E39 #7CB239

monochromatic

#1B1F55 #2A2F84 #3940B2 #5D63CB #8B90DA

Accessibility & contrast

On white

8.23

#3940B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#3940B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940B2

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940B2	#FFFFFF	#000000	##FFFFFF
##3940B2	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3940b2;
/* rgb */ color: rgb(57, 64, 178);
/* oklch */ color: oklch(44.0% 0.178 273.8);

Tailwind

colors: {
  custom: {
    50: '#7f75ca',
    500: '#3940b2',
    950: '#000000',
  },
}

SCSS

$custom: #3940b2;
$custom-light: #7f75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3940b2",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 236.529,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.44033,
    "c": 0.17773,
    "h": 273.8
  },
  "luminance": 0.07751
}

Semantic roles & 50–950 ramp

primary

#3940B2

secondary

#C4C182

accent

#D34DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3940B2

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

Preview Lab → · Contrast checker → · Palette generator →