#343BA7#343BA7

#343BA7 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.170 H 273.5°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#343BA7
RGB	rgb(52, 59, 167)
HSL	hsl(236, 53%, 43%)
HSV	hsv(236, 69%, 65%)
CMYK	cmyk(68.9%, 64.7%, 0%, 34.5%)
CIE-LAB	lab(30.99, 33.13, -58.94)
CIE-LCH	lch(30.99, 67.61, 299.34°)
OKLab	oklab(41.85% 0.0105 -0.1701)
OKLCH	oklch(41.85% 0.17 273.5)
XYZ	xyz(9.9529, 6.6471, 37.3102)
Luminance	0.0665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.31

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343BA7 #A7A034

analogous

#3474A7 #343BA7 #6634A7

triadic

#343BA7 #A7343B #3BA734

tetradic

#343BA7 #A73474 #A7A034 #34A766

square

#343BA7 #A73474 #A7A034 #34A766

split-complementary

#343BA7 #A76634 #74A734

monochromatic

#171A4A #252B78 #343BA7 #5057C8 #7E84D7

Accessibility & contrast

On white

9.01

#343BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#343BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BA7

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BA7	#FFFFFF	#000000	##FFFFFF
##343BA7	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0044A5

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343ba7;
/* rgb */ color: rgb(52, 59, 167);
/* oklch */ color: oklch(41.9% 0.170 273.5);

Tailwind

colors: {
  custom: {
    50: '#7b71c2',
    500: '#343ba7',
    950: '#000000',
  },
}

SCSS

$custom: #343ba7;
$custom-light: #7b71c2;
$custom-dark: #000000;

JSON

{
  "hex": "#343ba7",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 236.348,
    "s": 52.511,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41851,
    "c": 0.17043,
    "h": 273.5
  },
  "luminance": 0.06648
}

Semantic roles & 50–950 ramp

primary

#343BA7

secondary

#C0BC77

accent

#D34CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #343BA7

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

Preview Lab → · Contrast checker → · Palette generator →