#3939B9#3939B9

#3939B9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.5% C 0.195 H 274.7°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#3939B9
RGB	rgb(57, 57, 185)
HSL	hsl(240, 53%, 47%)
HSV	hsv(240, 69%, 73%)
CMYK	cmyk(69.2%, 69.2%, 0%, 27.5%)
CIE-LAB	lab(32.48, 41.22, -67.22)
CIE-LCH	lch(32.48, 78.85, 301.52°)
OKLab	oklab(43.51% 0.0159 -0.1942)
OKLCH	oklch(43.51% 0.195 274.7)
XYZ	xyz(11.9045, 7.2978, 46.6708)
Luminance	0.0730 (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

#3939B9 #B9B939

analogous

#3979B9 #3939B9 #7939B9

triadic

#3939B9 #B93939 #39B939

tetradic

#3939B9 #B93979 #B9B939 #39B979

square

#3939B9 #B93979 #B9B939 #39B979

split-complementary

#3939B9 #B97939 #79B939

monochromatic

#1C1C5B #2B2B8A #3939B9 #6161CE #9090DD

Accessibility & contrast

On white

8.54

#3939B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3939B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939B9

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939B9	#FFFFFF	#000000	##FFFFFF
##3939B9	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BD

Deuteranopia (green-blind)

#0046B7

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3939b9;
/* rgb */ color: rgb(57, 57, 185);
/* oklch */ color: oklch(43.5% 0.195 274.7);

Tailwind

colors: {
  custom: {
    50: '#8170cf',
    500: '#3939b9',
    950: '#000000',
  },
}

SCSS

$custom: #3939b9;
$custom-light: #8170cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3939b9",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 185
  },
  "hsl": {
    "h": 240,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43512,
    "c": 0.19488,
    "h": 274.7
  },
  "luminance": 0.07299
}

Semantic roles & 50–950 ramp

primary

#3939B9

secondary

#C8C886

accent

#DC4BDC

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3939B9

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

Preview Lab → · Contrast checker → · Palette generator →