#343CB0#343CB0

#343CB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.181 H 272.9°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#343CB0
RGB	rgb(52, 60, 176)
HSL	hsl(236, 54%, 45%)
HSV	hsv(236, 70%, 69%)
CMYK	cmyk(70.5%, 65.9%, 0%, 31%)
CIE-LAB	lab(32.02, 35.67, -62.63)
CIE-LCH	lch(32.02, 72.08, 299.66°)
OKLab	oklab(42.85% 0.0091 -0.1809)
OKLCH	oklch(42.85% 0.181 272.9)
XYZ	xyz(10.8659, 7.0953, 41.8628)
Luminance	0.0710 (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

#343CB0 #B0A834

analogous

#347AB0 #343CB0 #6A34B0

triadic

#343CB0 #B0343C #3CB034

tetradic

#343CB0 #B0347A #B0A834 #34B06A

square

#343CB0 #B0347A #B0A834 #34B06A

split-complementary

#343CB0 #B06A34 #7AB034

monochromatic

#181C52 #262C81 #343CB0 #555CCD #8489DB

Accessibility & contrast

On white

8.68

#343CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#343CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CB0

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CB0	#FFFFFF	#000000	##FFFFFF
##343CB0	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #343cb0;
/* rgb */ color: rgb(52, 60, 176);
/* oklch */ color: oklch(42.9% 0.181 272.9);

Tailwind

colors: {
  custom: {
    50: '#7d72c9',
    500: '#343cb0',
    950: '#000000',
  },
}

SCSS

$custom: #343cb0;
$custom-light: #7d72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#343cb0",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 236.129,
    "s": 54.386,
    "l": 44.706
  },
  "oklch": {
    "l": 0.4285,
    "c": 0.18116,
    "h": 272.9
  },
  "luminance": 0.07096
}

Semantic roles & 50–950 ramp

primary

#343CB0

secondary

#C4BF7C

accent

#D44ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343CB0

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

Preview Lab → · Contrast checker → · Palette generator →