#3939C8#3939C8

#3939C8 is a dark, highly saturated blue. Relative luminance 0.080; OKLCH L 45.0% C 0.213 H 273.7°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#3939C8
RGB	rgb(57, 57, 200)
HSL	hsl(240, 57%, 50%)
HSV	hsv(240, 72%, 78%)
CMYK	cmyk(71.5%, 71.5%, 0%, 21.6%)
CIE-LAB	lab(33.91, 46.21, -73.67)
CIE-LCH	lch(33.91, 86.96, 302.10°)
OKLab	oklab(44.98% 0.0137 -0.2131)
OKLCH	oklch(44.98% 0.214 273.7)
XYZ	xyz(13.5723, 7.9649, 55.4545)
Luminance	0.0797 (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

#3939C8 #C8C839

analogous

#3980C8 #3939C8 #8039C8

triadic

#3939C8 #C83939 #39C839

tetradic

#3939C8 #C83980 #C8C839 #39C880

square

#3939C8 #C83980 #C8C839 #39C880

split-complementary

#3939C8 #C88039 #80C839

monochromatic

#1D1D69 #2B2B99 #3939C8 #6969D5 #9999E3

Accessibility & contrast

On white

8.10

#3939C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3939C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939C8

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939C8	#FFFFFF	#000000	##FFFFFF
##3939C8	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CC

Deuteranopia (green-blind)

#0049C5

Tritanopia (blue-blind)

#00617D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3939c8;
/* rgb */ color: rgb(57, 57, 200);
/* oklch */ color: oklch(45.0% 0.213 273.7);

Tailwind

colors: {
  custom: {
    50: '#8471da',
    500: '#3939c8',
    950: '#000000',
  },
}

SCSS

$custom: #3939c8;
$custom-light: #8471da;
$custom-dark: #000000;

JSON

{
  "hex": "#3939c8",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 200
  },
  "hsl": {
    "h": 240,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.44975,
    "c": 0.2135,
    "h": 273.7
  },
  "luminance": 0.07966
}

Semantic roles & 50–950 ramp

primary

#3939C8

secondary

#CECE8F

accent

#E048E0

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #3939C8

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

Preview Lab → · Contrast checker → · Palette generator →