#3940AB#3940AB

#3940AB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.168 H 274.1°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#3940AB
RGB	rgb(57, 64, 171)
HSL	hsl(236, 50%, 45%)
HSV	hsv(236, 67%, 67%)
CMYK	cmyk(66.7%, 62.6%, 0%, 32.9%)
CIE-LAB	lab(32.87, 32.06, -58.26)
CIE-LCH	lch(32.87, 66.49, 298.82°)
OKLab	oklab(43.42% 0.0121 -0.1679)
OKLCH	oklch(43.42% 0.168 274.1)
XYZ	xyz(10.8690, 7.4760, 39.3904)
Luminance	0.0748 (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

#3940AB #ABA439

analogous

#3979AB #3940AB #6B39AB

triadic

#3940AB #AB3940 #40AB39

tetradic

#3940AB #AB3979 #ABA439 #39AB6B

square

#3940AB #AB3979 #ABA439 #39AB6B

split-complementary

#3940AB #AB6B39 #79AB39

monochromatic

#1A1E4F #2A2F7D #3940AB #5960C8 #878CD7

Accessibility & contrast

On white

8.42

#3940AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3940AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940AB

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940AB	#FFFFFF	#000000	##FFFFFF
##3940AB	1.00	8.42	2.50	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AE

Deuteranopia (green-blind)

#0048A9

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3940ab;
/* rgb */ color: rgb(57, 64, 171);
/* oklch */ color: oklch(43.4% 0.168 274.1);

Tailwind

colors: {
  custom: {
    50: '#7d75c5',
    500: '#3940ab',
    950: '#000000',
  },
}

SCSS

$custom: #3940ab;
$custom-light: #7d75c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3940ab",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 171
  },
  "hsl": {
    "h": 236.316,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43417,
    "c": 0.16837,
    "h": 274.1
  },
  "luminance": 0.07477
}

Semantic roles & 50–950 ramp

primary

#3940AB

secondary

#C1BD7F

accent

#D14EDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3940AB

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

Preview Lab → · Contrast checker → · Palette generator →