#3939B2#3939B2

#3939B2 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.186 H 275.2°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#3939B2
RGB	rgb(57, 57, 178)
HSL	hsl(240, 51%, 46%)
HSV	hsv(240, 68%, 70%)
CMYK	cmyk(68%, 68%, 0%, 30.2%)
CIE-LAB	lab(31.83, 38.85, -64.13)
CIE-LCH	lch(31.83, 74.98, 301.21°)
OKLab	oklab(42.85% 0.0168 -0.1852)
OKLCH	oklch(42.85% 0.186 275.2)
XYZ	xyz(11.1837, 7.0095, 42.8744)
Luminance	0.0701 (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

#3939B2 #B2B239

analogous

#3975B2 #3939B2 #7539B2

triadic

#3939B2 #B23939 #39B239

tetradic

#3939B2 #B23975 #B2B239 #39B275

square

#3939B2 #B23975 #B2B239 #39B275

split-complementary

#3939B2 #B27539 #75B239

monochromatic

#1B1B55 #2A2A84 #3939B2 #5D5DCB #8B8BDA

Accessibility & contrast

On white

8.74

#3939B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3939B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939B2

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939B2	#FFFFFF	#000000	##FFFFFF
##3939B2	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005971

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3939b2;
/* rgb */ color: rgb(57, 57, 178);
/* oklch */ color: oklch(42.8% 0.186 275.2);

Tailwind

colors: {
  custom: {
    50: '#7f70ca',
    500: '#3939b2',
    950: '#000000',
  },
}

SCSS

$custom: #3939b2;
$custom-light: #7f70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3939b2",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 240,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42848,
    "c": 0.18595,
    "h": 275.2
  },
  "luminance": 0.0701
}

Semantic roles & 50–950 ramp

primary

#3939B2

secondary

#C4C482

accent

#DB4DDB

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3939B2

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

Preview Lab → · Contrast checker → · Palette generator →