#3439BB#3439BB

#3439BB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.4% C 0.199 H 272.8°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#3439BB
RGB	rgb(52, 57, 187)
HSL	hsl(238, 56%, 47%)
HSV	hsv(238, 72%, 73%)
CMYK	cmyk(72.2%, 69.5%, 0%, 26.7%)
CIE-LAB	lab(32.35, 41.33, -68.61)
CIE-LCH	lch(32.35, 80.10, 301.07°)
OKLab	oklab(43.4% 0.0098 -0.1984)
OKLCH	oklch(43.4% 0.199 272.8)
XYZ	xyz(11.8459, 7.2430, 47.7778)
Luminance	0.0724 (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

#3439BB #BBB634

analogous

#347DBB #3439BB #7334BB

triadic

#3439BB #BB3439 #39BB34

tetradic

#3439BB #BB347D #BBB634 #34BB73

square

#3439BB #BB347D #BBB634 #34BB73

split-complementary

#3439BB #BB7334 #7DBB34

monochromatic

#191C5B #272A8B #3439BB #5B5FD1 #8B8EDF

Accessibility & contrast

On white

8.58

#3439BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3439BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3439BB

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3439BB	#FFFFFF	#000000	##FFFFFF
##3439BB	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BF

Deuteranopia (green-blind)

#0046B9

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3439bb;
/* rgb */ color: rgb(52, 57, 187);
/* oklch */ color: oklch(43.4% 0.199 272.8);

Tailwind

colors: {
  custom: {
    50: '#7f70d1',
    500: '#3439bb',
    950: '#000000',
  },
}

SCSS

$custom: #3439bb;
$custom-light: #7f70d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3439bb",
  "rgb": {
    "r": 52,
    "g": 57,
    "b": 187
  },
  "hsl": {
    "h": 237.778,
    "s": 56.485,
    "l": 46.863
  },
  "oklch": {
    "l": 0.434,
    "c": 0.19866,
    "h": 272.8
  },
  "luminance": 0.07244
}

Semantic roles & 50–950 ramp

primary

#3439BB

secondary

#C9C682

accent

#DA48E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3439BB

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

Preview Lab → · Contrast checker → · Palette generator →