#3940B5#3940B5

#3940B5 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.182 H 273.6°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#3940B5
RGB	rgb(57, 64, 181)
HSL	hsl(237, 52%, 47%)
HSV	hsv(237, 69%, 71%)
CMYK	cmyk(68.5%, 64.6%, 0%, 29%)
CIE-LAB	lab(33.71, 35.56, -62.82)
CIE-LCH	lch(33.71, 72.18, 299.51°)
OKLab	oklab(44.3% 0.0115 -0.1813)
OKLCH	oklch(44.3% 0.182 273.6)
XYZ	xyz(11.8584, 7.8717, 44.6016)
Luminance	0.0787 (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

#3940B5 #B5AE39

analogous

#397EB5 #3940B5 #7039B5

triadic

#3940B5 #B53940 #40B539

tetradic

#3940B5 #B5397E #B5AE39 #39B570

square

#3940B5 #B5397E #B5AE39 #39B570

split-complementary

#3940B5 #B57039 #7EB539

monochromatic

#1C1F58 #2A3086 #3940B5 #5F65CD #8D92DB

Accessibility & contrast

On white

8.16

#3940B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3940B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940B5

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940B5	#FFFFFF	#000000	##FFFFFF
##3940B5	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B9

Deuteranopia (green-blind)

#004AB3

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3940b5;
/* rgb */ color: rgb(57, 64, 181);
/* oklch */ color: oklch(44.3% 0.182 273.6);

Tailwind

colors: {
  custom: {
    50: '#7f75cc',
    500: '#3940b5',
    950: '#000000',
  },
}

SCSS

$custom: #3940b5;
$custom-light: #7f75cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3940b5",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 181
  },
  "hsl": {
    "h": 236.613,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44302,
    "c": 0.18169,
    "h": 273.6
  },
  "luminance": 0.07873
}

Semantic roles & 50–950 ramp

primary

#3940B5

secondary

#C6C284

accent

#D34CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3940B5

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

Preview Lab → · Contrast checker → · Palette generator →