#343DB1#343DB1

#343DB1 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.181 H 272.6°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#343DB1
RGB	rgb(52, 61, 177)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 69%)
CMYK	cmyk(70.6%, 65.5%, 0%, 30.6%)
CIE-LAB	lab(32.35, 35.40, -62.69)
CIE-LCH	lch(32.35, 71.99, 299.45°)
OKLab	oklab(43.12% 0.0083 -0.1811)
OKLCH	oklch(43.12% 0.181 272.6)
XYZ	xyz(11.0181, 7.2408, 42.4034)
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

#343DB1 #B1A834

analogous

#347CB1 #343DB1 #6A34B1

triadic

#343DB1 #B1343D #3DB134

tetradic

#343DB1 #B1347C #B1A834 #34B16A

square

#343DB1 #B1347C #B1A834 #34B16A

split-complementary

#343DB1 #B16A34 #7CB134

monochromatic

#181C52 #262D82 #343DB1 #555ECD #848BDB

Accessibility & contrast

On white

8.58

#343DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#343DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DB1

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DB1	#FFFFFF	#000000	##FFFFFF
##343DB1	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)

#0052B5

Deuteranopia (green-blind)

#0046AF

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343db1;
/* rgb */ color: rgb(52, 61, 177);
/* oklch */ color: oklch(43.1% 0.181 272.6);

Tailwind

colors: {
  custom: {
    50: '#7d73c9',
    500: '#343db1',
    950: '#000000',
  },
}

SCSS

$custom: #343db1;
$custom-light: #7d73c9;
$custom-dark: #000000;

JSON

{
  "hex": "#343db1",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 177
  },
  "hsl": {
    "h": 235.68,
    "s": 54.585,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43116,
    "c": 0.18129,
    "h": 272.6
  },
  "luminance": 0.07242
}

Semantic roles & 50–950 ramp

primary

#343DB1

secondary

#C5BF7C

accent

#D34ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343DB1

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

Preview Lab → · Contrast checker → · Palette generator →