#343CB5#343CB5

#343CB5 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.3% C 0.188 H 272.6°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#343CB5
RGB	rgb(52, 60, 181)
HSL	hsl(236, 55%, 46%)
HSV	hsv(236, 71%, 71%)
CMYK	cmyk(71.3%, 66.9%, 0%, 29%)
CIE-LAB	lab(32.47, 37.42, -64.86)
CIE-LCH	lch(32.47, 74.89, 299.98°)
OKLab	oklab(43.32% 0.0086 -0.1875)
OKLCH	oklch(43.32% 0.188 272.6)
XYZ	xyz(11.3697, 7.2969, 44.5163)
Luminance	0.0730 (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

#343CB5 #B5AD34

analogous

#347CB5 #343CB5 #6C34B5

triadic

#343CB5 #B5343C #3CB534

tetradic

#343CB5 #B5347C #B5AD34 #34B56C

square

#343CB5 #B5347C #B5AD34 #34B56C

split-complementary

#343CB5 #B56C34 #7CB534

monochromatic

#191C56 #262C85 #343CB5 #575FCF #878CDC

Accessibility & contrast

On white

8.54

#343CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#343CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CB5

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CB5	#FFFFFF	#000000	##FFFFFF
##343CB5	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B9

Deuteranopia (green-blind)

#0046B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343cb5;
/* rgb */ color: rgb(52, 60, 181);
/* oklch */ color: oklch(43.3% 0.188 272.6);

Tailwind

colors: {
  custom: {
    50: '#7e72cc',
    500: '#343cb5',
    950: '#000000',
  },
}

SCSS

$custom: #343cb5;
$custom-light: #7e72cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343cb5",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 181
  },
  "hsl": {
    "h": 236.279,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43317,
    "c": 0.18766,
    "h": 272.6
  },
  "luminance": 0.07298
}

Semantic roles & 50–950 ramp

primary

#343CB5

secondary

#C6C27F

accent

#D549DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343CB5

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

Preview Lab → · Contrast checker → · Palette generator →