#3941AB#3941AB

#3941AB is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.6% C 0.167 H 273.9°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#3941AB
RGB	rgb(57, 65, 171)
HSL	hsl(236, 50%, 45%)
HSV	hsv(236, 67%, 67%)
CMYK	cmyk(66.7%, 62%, 0%, 32.9%)
CIE-LAB	lab(33.11, 31.42, -57.85)
CIE-LCH	lch(33.11, 65.83, 298.50°)
OKLab	oklab(43.6% 0.0113 -0.1667)
OKLCH	oklch(43.6% 0.167 273.9)
XYZ	xyz(10.9259, 7.5898, 39.4094)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3941AB #ABA339

analogous

#397AAB #3941AB #6A39AB

triadic

#3941AB #AB3941 #41AB39

tetradic

#3941AB #AB397A #ABA339 #39AB6A

square

#3941AB #AB397A #ABA339 #39AB6A

split-complementary

#3941AB #AB6A39 #7AAB39

monochromatic

#1A1E4F #2A307D #3941AB #5961C8 #878DD7

Accessibility & contrast

On white

8.34

#3941AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3941AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3941AB

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3941AB	#FFFFFF	#000000	##FFFFFF
##3941AB	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AE

Deuteranopia (green-blind)

#0049A9

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3941ab;
/* rgb */ color: rgb(57, 65, 171);
/* oklch */ color: oklch(43.6% 0.167 273.9);

Tailwind

colors: {
  custom: {
    50: '#7d75c5',
    500: '#3941ab',
    950: '#000000',
  },
}

SCSS

$custom: #3941ab;
$custom-light: #7d75c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3941ab",
  "rgb": {
    "r": 57,
    "g": 65,
    "b": 171
  },
  "hsl": {
    "h": 235.789,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43599,
    "c": 0.16713,
    "h": 273.9
  },
  "luminance": 0.07591
}

Semantic roles & 50–950 ramp

primary

#3941AB

secondary

#C1BD7F

accent

#D04EDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3941AB

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

Preview Lab → · Contrast checker → · Palette generator →