#3940B4#3940B4

#3940B4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.2% C 0.180 H 273.7°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#3940B4
RGB	rgb(57, 64, 180)
HSL	hsl(237, 52%, 46%)
HSV	hsv(237, 68%, 71%)
CMYK	cmyk(68.3%, 64.4%, 0%, 29.4%)
CIE-LAB	lab(33.63, 35.21, -62.37)
CIE-LCH	lch(33.63, 71.62, 299.45°)
OKLab	oklab(44.21% 0.0116 -0.18)
OKLCH	oklch(44.21% 0.18 273.7)
XYZ	xyz(11.7562, 7.8308, 44.0631)
Luminance	0.0783 (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

#3940B4 #B4AD39

analogous

#397EB4 #3940B4 #7039B4

triadic

#3940B4 #B43940 #40B439

tetradic

#3940B4 #B4397E #B4AD39 #39B470

square

#3940B4 #B4397E #B4AD39 #39B470

split-complementary

#3940B4 #B47039 #7EB439

monochromatic

#1C1F57 #2A2F86 #3940B4 #5E64CC #8D91DB

Accessibility & contrast

On white

8.18

#3940B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3940B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940B4

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940B4	#FFFFFF	#000000	##FFFFFF
##3940B4	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3940b4;
/* rgb */ color: rgb(57, 64, 180);
/* oklch */ color: oklch(44.2% 0.180 273.7);

Tailwind

colors: {
  custom: {
    50: '#7f75cb',
    500: '#3940b4',
    950: '#000000',
  },
}

SCSS

$custom: #3940b4;
$custom-light: #7f75cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3940b4",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 180
  },
  "hsl": {
    "h": 236.585,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44212,
    "c": 0.18038,
    "h": 273.7
  },
  "luminance": 0.07832
}

Semantic roles & 50–950 ramp

primary

#3940B4

secondary

#C5C283

accent

#D34CDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3940B4

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

Preview Lab → · Contrast checker → · Palette generator →