#343CA7#343CA7

#343CA7 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.169 H 273.3°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#343CA7
RGB	rgb(52, 60, 167)
HSL	hsl(236, 53%, 43%)
HSV	hsv(236, 69%, 65%)
CMYK	cmyk(68.9%, 64.1%, 0%, 34.5%)
CIE-LAB	lab(31.23, 32.49, -58.54)
CIE-LCH	lch(31.23, 66.95, 299.03°)
OKLab	oklab(42.03% 0.0097 -0.1689)
OKLCH	oklch(42.03% 0.169 273.3)
XYZ	xyz(10.0048, 6.7509, 37.3275)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343CA7 #A79F34

analogous

#3475A7 #343CA7 #6534A7

triadic

#343CA7 #A7343C #3CA734

tetradic

#343CA7 #A73475 #A79F34 #34A765

square

#343CA7 #A73475 #A79F34 #34A765

split-complementary

#343CA7 #A76534 #75A734

monochromatic

#171A4A #252B78 #343CA7 #5058C8 #7E85D7

Accessibility & contrast

On white

8.93

#343CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#343CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CA7

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CA7	#FFFFFF	#000000	##FFFFFF
##343CA7	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0044A5

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343ca7;
/* rgb */ color: rgb(52, 60, 167);
/* oklch */ color: oklch(42.0% 0.169 273.3);

Tailwind

colors: {
  custom: {
    50: '#7b72c2',
    500: '#343ca7',
    950: '#000000',
  },
}

SCSS

$custom: #343ca7;
$custom-light: #7b72c2;
$custom-dark: #000000;

JSON

{
  "hex": "#343ca7",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 167
  },
  "hsl": {
    "h": 235.826,
    "s": 52.511,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42029,
    "c": 0.16921,
    "h": 273.3
  },
  "luminance": 0.06752
}

Semantic roles & 50–950 ramp

primary

#343CA7

secondary

#C0BB77

accent

#D24CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #343CA7

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

Preview Lab → · Contrast checker → · Palette generator →