#3939B4#3939B4

#3939B4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.189 H 275.0°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#3939B4
RGB	rgb(57, 57, 180)
HSL	hsl(240, 52%, 46%)
HSV	hsv(240, 68%, 71%)
CMYK	cmyk(68.3%, 68.3%, 0%, 29.4%)
CIE-LAB	lab(32.01, 39.53, -65.02)
CIE-LCH	lch(32.01, 76.09, 301.30°)
OKLab	oklab(43.04% 0.0166 -0.1878)
OKLCH	oklch(43.04% 0.189 275)
XYZ	xyz(11.3860, 7.0904, 43.9397)
Luminance	0.0709 (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

#3939B4 #B4B439

analogous

#3977B4 #3939B4 #7739B4

triadic

#3939B4 #B43939 #39B439

tetradic

#3939B4 #B43977 #B4B439 #39B477

square

#3939B4 #B43977 #B4B439 #39B477

split-complementary

#3939B4 #B47739 #77B439

monochromatic

#1C1C57 #2A2A86 #3939B4 #5E5ECC #8D8DDB

Accessibility & contrast

On white

8.68

#3939B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3939B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939B4

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939B4	#FFFFFF	#000000	##FFFFFF
##3939B4	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3939b4;
/* rgb */ color: rgb(57, 57, 180);
/* oklch */ color: oklch(43.0% 0.189 275.0);

Tailwind

colors: {
  custom: {
    50: '#8070cc',
    500: '#3939b4',
    950: '#000000',
  },
}

SCSS

$custom: #3939b4;
$custom-light: #8070cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3939b4",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 180
  },
  "hsl": {
    "h": 240,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43037,
    "c": 0.18852,
    "h": 275
  },
  "luminance": 0.07091
}

Semantic roles & 50–950 ramp

primary

#3939B4

secondary

#C5C583

accent

#DB4CDB

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3939B4

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

Preview Lab → · Contrast checker → · Palette generator →