#343FAC#343FAC

#343FAC is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.172 H 272.4°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#343FAC
RGB	rgb(52, 63, 172)
HSL	hsl(235, 54%, 44%)
HSV	hsv(235, 70%, 67%)
CMYK	cmyk(69.8%, 63.4%, 0%, 32.5%)
CIE-LAB	lab(32.40, 32.35, -59.63)
CIE-LCH	lch(32.40, 67.84, 298.48°)
OKLab	oklab(43.02% 0.0072 -0.1721)
OKLCH	oklch(43.02% 0.172 272.4)
XYZ	xyz(10.6376, 7.2626, 39.8629)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.04

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343FAC #ACA134

analogous

#347BAC #343FAC #6534AC

triadic

#343FAC #AC343F #3FAC34

tetradic

#343FAC #AC347B #ACA134 #34AC65

square

#343FAC #AC347B #ACA134 #34AC65

split-complementary

#343FAC #AC6534 #7BAC34

monochromatic

#181D4E #262E7D #343FAC #525DCB #8189D9

Accessibility & contrast

On white

8.56

#343FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#343FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FAC

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FAC	#FFFFFF	#000000	##FFFFFF
##343FAC	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B0

Deuteranopia (green-blind)

#0047AA

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343fac;
/* rgb */ color: rgb(52, 63, 172);
/* oklch */ color: oklch(43.0% 0.172 272.4);

Tailwind

colors: {
  custom: {
    50: '#7b74c6',
    500: '#343fac',
    950: '#000000',
  },
}

SCSS

$custom: #343fac;
$custom-light: #7b74c6;
$custom-dark: #000000;

JSON

{
  "hex": "#343fac",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 172
  },
  "hsl": {
    "h": 234.5,
    "s": 53.571,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43017,
    "c": 0.17227,
    "h": 272.4
  },
  "luminance": 0.07264
}

Semantic roles & 50–950 ramp

primary

#343FAC

secondary

#C2BC79

accent

#D04BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343FAC

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

Preview Lab → · Contrast checker → · Palette generator →