#343CC5#343CC5

#343CC5 is a dark, highly saturated blue. Relative luminance 0.080; OKLCH L 44.9% C 0.208 H 271.9°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#343CC5
RGB	rgb(52, 60, 197)
HSL	hsl(237, 58%, 49%)
HSV	hsv(237, 74%, 77%)
CMYK	cmyk(73.6%, 69.5%, 0%, 22.7%)
CIE-LAB	lab(33.97, 42.95, -71.83)
CIE-LCH	lch(33.97, 83.69, 300.88°)
OKLab	oklab(44.85% 0.0069 -0.2078)
OKLCH	oklch(44.85% 0.208 271.9)
XYZ	xyz(13.1067, 7.9916, 53.6643)
Luminance	0.0799 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.46

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343CC5 #C5BD34

analogous

#3485C5 #343CC5 #7534C5

triadic

#343CC5 #C5343C #3CC534

tetradic

#343CC5 #C53485 #C5BD34 #34C575

square

#343CC5 #C53485 #C5BD34 #34C575

split-complementary

#343CC5 #C57534 #85C534

monochromatic

#1A1F64 #272D95 #343CC5 #6167D5 #9196E2

Accessibility & contrast

On white

8.08

#343CC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#343CC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CC5

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CC5	#FFFFFF	#000000	##FFFFFF
##343CC5	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C9

Deuteranopia (green-blind)

#0049C2

Tritanopia (blue-blind)

#00627C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #343cc5;
/* rgb */ color: rgb(52, 60, 197);
/* oklch */ color: oklch(44.9% 0.208 271.9);

Tailwind

colors: {
  custom: {
    50: '#8172d8',
    500: '#343cc5',
    950: '#000000',
  },
}

SCSS

$custom: #343cc5;
$custom-light: #8172d8;
$custom-dark: #000000;

JSON

{
  "hex": "#343cc5",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 197
  },
  "hsl": {
    "h": 236.69,
    "s": 58.233,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4485,
    "c": 0.20794,
    "h": 271.9
  },
  "luminance": 0.07993
}

Semantic roles & 50–950 ramp

primary

#343CC5

secondary

#CDC988

accent

#D946E1

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #343CC5

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

Preview Lab → · Contrast checker → · Palette generator →