#343CB2#343CB2

#343CB2 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.184 H 272.8°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#343CB2
RGB	rgb(52, 60, 178)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 70%)
CMYK	cmyk(70.8%, 66.3%, 0%, 30.2%)
CIE-LAB	lab(32.20, 36.37, -63.53)
CIE-LCH	lch(32.20, 73.20, 299.79°)
OKLab	oklab(43.04% 0.0089 -0.1835)
OKLCH	oklch(43.04% 0.184 272.8)
XYZ	xyz(11.0652, 7.1751, 42.9126)
Luminance	0.0718 (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

#343CB2 #B2AA34

analogous

#347BB2 #343CB2 #6B34B2

triadic

#343CB2 #B2343C #3CB234

tetradic

#343CB2 #B2347B #B2AA34 #34B26B

square

#343CB2 #B2347B #B2AA34 #34B26B

split-complementary

#343CB2 #B26B34 #7BB234

monochromatic

#181C53 #262C83 #343CB2 #565DCE #858BDB

Accessibility & contrast

On white

8.62

#343CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#343CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CB2

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CB2	#FFFFFF	#000000	##FFFFFF
##343CB2	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0046B0

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343cb2;
/* rgb */ color: rgb(52, 60, 178);
/* oklch */ color: oklch(43.0% 0.184 272.8);

Tailwind

colors: {
  custom: {
    50: '#7d72ca',
    500: '#343cb2',
    950: '#000000',
  },
}

SCSS

$custom: #343cb2;
$custom-light: #7d72ca;
$custom-dark: #000000;

JSON

{
  "hex": "#343cb2",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 178
  },
  "hsl": {
    "h": 236.19,
    "s": 54.783,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43036,
    "c": 0.18377,
    "h": 272.8
  },
  "luminance": 0.07176
}

Semantic roles & 50–950 ramp

primary

#343CB2

secondary

#C5C07D

accent

#D54ADE

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343CB2

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

Preview Lab → · Contrast checker → · Palette generator →