#343DB5#343DB5

#343DB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.5% C 0.187 H 272.5°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#343DB5
RGB	rgb(52, 61, 181)
HSL	hsl(236, 55%, 46%)
HSV	hsv(236, 71%, 71%)
CMYK	cmyk(71.3%, 66.3%, 0%, 29%)
CIE-LAB	lab(32.71, 36.80, -64.48)
CIE-LCH	lch(32.71, 74.25, 299.71°)
OKLab	oklab(43.49% 0.008 -0.1863)
OKLCH	oklch(43.49% 0.187 272.5)
XYZ	xyz(11.4226, 7.4026, 44.5340)
Luminance	0.0740 (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

#343DB5 #B5AC34

analogous

#347DB5 #343DB5 #6B34B5

triadic

#343DB5 #B5343D #3DB534

tetradic

#343DB5 #B5347D #B5AC34 #34B56B

square

#343DB5 #B5347D #B5AC34 #34B56B

split-complementary

#343DB5 #B56B34 #7DB534

monochromatic

#191D56 #262D85 #343DB5 #5760CF #878DDC

Accessibility & contrast

On white

8.47

#343DB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#343DB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DB5

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DB5	#FFFFFF	#000000	##FFFFFF
##343DB5	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B9

Deuteranopia (green-blind)

#0047B3

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343db5;
/* rgb */ color: rgb(52, 61, 181);
/* oklch */ color: oklch(43.5% 0.187 272.5);

Tailwind

colors: {
  custom: {
    50: '#7e73cc',
    500: '#343db5',
    950: '#000000',
  },
}

SCSS

$custom: #343db5;
$custom-light: #7e73cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343db5",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 181
  },
  "hsl": {
    "h": 235.814,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43486,
    "c": 0.18651,
    "h": 272.5
  },
  "luminance": 0.07404
}

Semantic roles & 50–950 ramp

primary

#343DB5

secondary

#C6C17F

accent

#D449DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343DB5

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

Preview Lab → · Contrast checker → · Palette generator →