#343FB2#343FB2

#343FB2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.180 H 272.2°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#343FB2
RGB	rgb(52, 63, 178)
HSL	hsl(235, 55%, 45%)
HSV	hsv(235, 71%, 70%)
CMYK	cmyk(70.8%, 64.6%, 0%, 30.2%)
CIE-LAB	lab(32.92, 34.48, -62.36)
CIE-LCH	lch(32.92, 71.26, 298.94°)
OKLab	oklab(43.56% 0.0068 -0.1801)
OKLCH	oklch(43.56% 0.18 272.2)
XYZ	xyz(11.2269, 7.4983, 42.9665)
Luminance	0.0750 (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

#343FB2 #B2A734

analogous

#347EB2 #343FB2 #6834B2

triadic

#343FB2 #B2343F #3FB234

tetradic

#343FB2 #B2347E #B2A734 #34B268

square

#343FB2 #B2347E #B2A734 #34B268

split-complementary

#343FB2 #B26834 #7EB234

monochromatic

#181D53 #262E83 #343FB2 #5660CE #858DDB

Accessibility & contrast

On white

8.40

#343FB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#343FB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FB2

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FB2	#FFFFFF	#000000	##FFFFFF
##343FB2	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B6

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343fb2;
/* rgb */ color: rgb(52, 63, 178);
/* oklch */ color: oklch(43.6% 0.180 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d74ca',
    500: '#343fb2',
    950: '#000000',
  },
}

SCSS

$custom: #343fb2;
$custom-light: #7d74ca;
$custom-dark: #000000;

JSON

{
  "hex": "#343fb2",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 178
  },
  "hsl": {
    "h": 234.762,
    "s": 54.783,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43557,
    "c": 0.18024,
    "h": 272.2
  },
  "luminance": 0.07499
}

Semantic roles & 50–950 ramp

primary

#343FB2

secondary

#C5BF7D

accent

#D14ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343FB2

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

Preview Lab → · Contrast checker → · Palette generator →