#343CB4#343CB4

#343CB4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.186 H 272.7°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#343CB4
RGB	rgb(52, 60, 180)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 71%)
CMYK	cmyk(71.1%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(32.38, 37.08, -64.42)
CIE-LCH	lch(32.38, 74.33, 299.92°)
OKLab	oklab(43.22% 0.0087 -0.1862)
OKLCH	oklch(43.22% 0.186 272.7)
XYZ	xyz(11.2675, 7.2560, 43.9779)
Luminance	0.0726 (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

#343CB4 #B4AC34

analogous

#347CB4 #343CB4 #6C34B4

triadic

#343CB4 #B4343C #3CB434

tetradic

#343CB4 #B4347C #B4AC34 #34B46C

square

#343CB4 #B4347C #B4AC34 #34B46C

split-complementary

#343CB4 #B46C34 #7CB434

monochromatic

#191C55 #262C85 #343CB4 #575ECE #868CDC

Accessibility & contrast

On white

8.57

#343CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#343CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CB4

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CB4	#FFFFFF	#000000	##FFFFFF
##343CB4	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343cb4;
/* rgb */ color: rgb(52, 60, 180);
/* oklch */ color: oklch(43.2% 0.186 272.7);

Tailwind

colors: {
  custom: {
    50: '#7d72cc',
    500: '#343cb4',
    950: '#000000',
  },
}

SCSS

$custom: #343cb4;
$custom-light: #7d72cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343cb4",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 236.25,
    "s": 55.172,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43223,
    "c": 0.18636,
    "h": 272.7
  },
  "luminance": 0.07257
}

Semantic roles & 50–950 ramp

primary

#343CB4

secondary

#C6C17E

accent

#D549DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343CB4

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

Preview Lab → · Contrast checker → · Palette generator →