#3939C4#3939C4

#3939C4 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.6% C 0.209 H 273.9°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#3939C4
RGB	rgb(57, 57, 196)
HSL	hsl(240, 55%, 50%)
HSV	hsv(240, 71%, 77%)
CMYK	cmyk(70.9%, 70.9%, 0%, 23.1%)
CIE-LAB	lab(33.52, 44.89, -71.97)
CIE-LCH	lch(33.52, 84.82, 301.95°)
OKLab	oklab(44.58% 0.0143 -0.2081)
OKLCH	oklch(44.58% 0.209 273.9)
XYZ	xyz(13.1110, 7.7804, 53.0247)
Luminance	0.0778 (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

#3939C4 #C4C439

analogous

#397FC4 #3939C4 #7F39C4

triadic

#3939C4 #C43939 #39C439

tetradic

#3939C4 #C4397F #C4C439 #39C47F

square

#3939C4 #C4397F #C4C439 #39C47F

split-complementary

#3939C4 #C47F39 #7FC439

monochromatic

#1D1D65 #2B2B95 #3939C4 #6767D3 #9797E1

Accessibility & contrast

On white

8.21

#3939C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3939C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939C4

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939C4	#FFFFFF	#000000	##FFFFFF
##3939C4	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C8

Deuteranopia (green-blind)

#0048C1

Tritanopia (blue-blind)

#00607A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3939c4;
/* rgb */ color: rgb(57, 57, 196);
/* oklch */ color: oklch(44.6% 0.209 273.9);

Tailwind

colors: {
  custom: {
    50: '#8371d7',
    500: '#3939c4',
    950: '#000000',
  },
}

SCSS

$custom: #3939c4;
$custom-light: #8371d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3939c4",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 196
  },
  "hsl": {
    "h": 240,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.4458,
    "c": 0.20859,
    "h": 273.9
  },
  "luminance": 0.07782
}

Semantic roles & 50–950 ramp

primary

#3939C4

secondary

#CCCC8D

accent

#DE4ADE

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3939C4

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

Preview Lab → · Contrast checker → · Palette generator →