#3942B1#3942B1

#3942B1 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.174 H 273.4°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#3942B1
RGB	rgb(57, 66, 177)
HSL	hsl(236, 51%, 46%)
HSV	hsv(236, 68%, 69%)
CMYK	cmyk(67.8%, 62.7%, 0%, 30.6%)
CIE-LAB	lab(33.86, 32.89, -60.21)
CIE-LCH	lch(33.86, 68.61, 298.65°)
OKLab	oklab(44.3% 0.0102 -0.1737)
OKLCH	oklch(44.3% 0.174 273.4)
XYZ	xyz(11.5687, 7.9395, 42.5093)
Luminance	0.0794 (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

#3942B1 #B1A839

analogous

#397EB1 #3942B1 #6C39B1

triadic

#3942B1 #B13942 #42B139

tetradic

#3942B1 #B1397E #B1A839 #39B16C

square

#3942B1 #B1397E #B1A839 #39B16C

split-complementary

#3942B1 #B16C39 #7EB139

monochromatic

#1B1F54 #2A3183 #3942B1 #5D65CB #8B91DA

Accessibility & contrast

On white

8.11

#3942B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3942B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3942B1

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3942B1	#FFFFFF	#000000	##FFFFFF
##3942B1	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B5

Deuteranopia (green-blind)

#004AAF

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3942b1;
/* rgb */ color: rgb(57, 66, 177);
/* oklch */ color: oklch(44.3% 0.174 273.4);

Tailwind

colors: {
  custom: {
    50: '#7e76c9',
    500: '#3942b1',
    950: '#000000',
  },
}

SCSS

$custom: #3942b1;
$custom-light: #7e76c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3942b1",
  "rgb": {
    "r": 57,
    "g": 66,
    "b": 177
  },
  "hsl": {
    "h": 235.5,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.44301,
    "c": 0.17398,
    "h": 273.4
  },
  "luminance": 0.07941
}

Semantic roles & 50–950 ramp

primary

#3942B1

secondary

#C4BF82

accent

#D04DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3942B1

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

Preview Lab → · Contrast checker → · Palette generator →