#343DA7#343DA7

#343DA7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.168 H 273.1°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#343DA7
RGB	rgb(52, 61, 167)
HSL	hsl(235, 53%, 43%)
HSV	hsv(235, 69%, 65%)
CMYK	cmyk(68.9%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(31.48, 31.85, -58.14)
CIE-LCH	lch(31.48, 66.29, 298.71°)
OKLab	oklab(42.21% 0.009 -0.1677)
OKLCH	oklch(42.21% 0.168 273.1)
XYZ	xyz(10.0576, 6.8566, 37.3452)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DA7 #A79E34

analogous

#3477A7 #343DA7 #6434A7

triadic

#343DA7 #A7343D #3DA734

tetradic

#343DA7 #A73477 #A79E34 #34A764

square

#343DA7 #A73477 #A79E34 #34A764

split-complementary

#343DA7 #A76434 #77A734

monochromatic

#171B4A #252C78 #343DA7 #5059C8 #7E85D7

Accessibility & contrast

On white

8.85

#343DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#343DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DA7

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DA7	#FFFFFF	#000000	##FFFFFF
##343DA7	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343da7;
/* rgb */ color: rgb(52, 61, 167);
/* oklch */ color: oklch(42.2% 0.168 273.1);

Tailwind

colors: {
  custom: {
    50: '#7b72c2',
    500: '#343da7',
    950: '#000000',
  },
}

SCSS

$custom: #343da7;
$custom-light: #7b72c2;
$custom-dark: #000000;

JSON

{
  "hex": "#343da7",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 235.304,
    "s": 52.511,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42209,
    "c": 0.16799,
    "h": 273.1
  },
  "luminance": 0.06858
}

Semantic roles & 50–950 ramp

primary

#343DA7

secondary

#C0BA77

accent

#D14CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343DA7

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

Preview Lab → · Contrast checker → · Palette generator →