#343DB3#343DB3

#343DB3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.3% C 0.184 H 272.5°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#343DB3
RGB	rgb(52, 61, 179)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 70%)
CMYK	cmyk(70.9%, 65.9%, 0%, 29.8%)
CIE-LAB	lab(32.53, 36.10, -63.59)
CIE-LCH	lch(32.53, 73.12, 299.58°)
OKLab	oklab(43.3% 0.0081 -0.1837)
OKLCH	oklch(43.3% 0.184 272.5)
XYZ	xyz(11.2189, 7.3211, 43.4610)
Luminance	0.0732 (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

#343DB3 #B3AA34

analogous

#347CB3 #343DB3 #6A34B3

triadic

#343DB3 #B3343D #3DB334

tetradic

#343DB3 #B3347C #B3AA34 #34B36A

square

#343DB3 #B3347C #B3AA34 #34B36A

split-complementary

#343DB3 #B36A34 #7CB334

monochromatic

#181D54 #262D84 #343DB3 #565FCE #868CDC

Accessibility & contrast

On white

8.52

#343DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#343DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DB3

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DB3	#FFFFFF	#000000	##FFFFFF
##343DB3	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343db3;
/* rgb */ color: rgb(52, 61, 179);
/* oklch */ color: oklch(43.3% 0.184 272.5);

Tailwind

colors: {
  custom: {
    50: '#7d73cb',
    500: '#343db3',
    950: '#000000',
  },
}

SCSS

$custom: #343db3;
$custom-light: #7d73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#343db3",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 179
  },
  "hsl": {
    "h": 235.748,
    "s": 54.978,
    "l": 45.294
  },
  "oklch": {
    "l": 0.433,
    "c": 0.18391,
    "h": 272.5
  },
  "luminance": 0.07322
}

Semantic roles & 50–950 ramp

primary

#343DB3

secondary

#C5C07D

accent

#D449DE

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343DB3

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

Preview Lab → · Contrast checker → · Palette generator →