#3940B9#3940B9

#3940B9 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.187 H 273.4°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#3940B9
RGB	rgb(57, 64, 185)
HSL	hsl(237, 53%, 47%)
HSV	hsv(237, 69%, 73%)
CMYK	cmyk(69.2%, 65.4%, 0%, 27.5%)
CIE-LAB	lab(34.06, 36.95, -64.61)
CIE-LCH	lch(34.06, 74.43, 299.76°)
OKLab	oklab(44.66% 0.0112 -0.1866)
OKLCH	oklch(44.66% 0.187 273.4)
XYZ	xyz(12.2748, 8.0383, 46.7942)
Luminance	0.0804 (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

#3940B9 #B9B239

analogous

#3980B9 #3940B9 #7239B9

triadic

#3940B9 #B93940 #40B939

tetradic

#3940B9 #B93980 #B9B239 #39B972

square

#3940B9 #B93980 #B9B239 #39B972

split-complementary

#3940B9 #B97239 #80B939

monochromatic

#1C205B #2B308A #3940B9 #6167CE #9094DD

Accessibility & contrast

On white

8.05

#3940B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3940B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940B9

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940B9	#FFFFFF	#000000	##FFFFFF
##3940B9	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BD

Deuteranopia (green-blind)

#004AB7

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3940b9;
/* rgb */ color: rgb(57, 64, 185);
/* oklch */ color: oklch(44.7% 0.187 273.4);

Tailwind

colors: {
  custom: {
    50: '#8075cf',
    500: '#3940b9',
    950: '#000000',
  },
}

SCSS

$custom: #3940b9;
$custom-light: #8075cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3940b9",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 185
  },
  "hsl": {
    "h": 236.719,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44663,
    "c": 0.18692,
    "h": 273.4
  },
  "luminance": 0.08039
}

Semantic roles & 50–950 ramp

primary

#3940B9

secondary

#C8C486

accent

#D44BDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3940B9

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

Preview Lab → · Contrast checker → · Palette generator →