#3839B8#3839B8

#3839B8 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.4% C 0.194 H 274.4°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#3839B8
RGB	rgb(56, 57, 184)
HSL	hsl(240, 53%, 47%)
HSV	hsv(240, 70%, 72%)
CMYK	cmyk(69.6%, 69%, 0%, 27.8%)
CIE-LAB	lab(32.32, 40.76, -66.89)
CIE-LCH	lch(32.32, 78.33, 301.36°)
OKLab	oklab(43.35% 0.0149 -0.1933)
OKLCH	oklch(43.35% 0.194 274.4)
XYZ	xyz(11.7429, 7.2266, 46.1141)
Luminance	0.0723 (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

#3839B8 #B8B738

analogous

#3879B8 #3839B8 #7738B8

triadic

#3839B8 #B83839 #39B838

tetradic

#3839B8 #B83879 #B8B738 #38B877

square

#3839B8 #B83879 #B8B738 #38B877

split-complementary

#3839B8 #B87738 #79B838

monochromatic

#1B1C5A #2A2A89 #3839B8 #5F60CE #8E8EDD

Accessibility & contrast

On white

8.59

#3839B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3839B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3839B8

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3839B8	#FFFFFF	#000000	##FFFFFF
##3839B8	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BC

Deuteranopia (green-blind)

#0046B6

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3839b8;
/* rgb */ color: rgb(56, 57, 184);
/* oklch */ color: oklch(43.4% 0.194 274.4);

Tailwind

colors: {
  custom: {
    50: '#8070ce',
    500: '#3839b8',
    950: '#000000',
  },
}

SCSS

$custom: #3839b8;
$custom-light: #8070ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3839b8",
  "rgb": {
    "r": 56,
    "g": 57,
    "b": 184
  },
  "hsl": {
    "h": 239.531,
    "s": 53.333,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43353,
    "c": 0.19386,
    "h": 274.4
  },
  "luminance": 0.07228
}

Semantic roles & 50–950 ramp

primary

#3839B8

secondary

#C7C785

accent

#DC4BDD

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3839B8

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

Preview Lab → · Contrast checker → · Palette generator →