#343DA3#343DA3

#343DA3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.163 H 273.2°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#343DA3
RGB	rgb(52, 61, 163)
HSL	hsl(235, 52%, 42%)
HSV	hsv(235, 68%, 64%)
CMYK	cmyk(68.1%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(31.14, 30.42, -56.28)
CIE-LCH	lch(31.14, 63.98, 298.39°)
OKLab	oklab(41.86% 0.0091 -0.1623)
OKLCH	oklch(41.86% 0.163 273.2)
XYZ	xyz(9.6936, 6.7110, 35.4277)
Luminance	0.0671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DA3 #A39A34

analogous

#3475A3 #343DA3 #6334A3

triadic

#343DA3 #A3343D #3DA334

tetradic

#343DA3 #A33475 #A39A34 #34A363

square

#343DA3 #A33475 #A39A34 #34A363

split-complementary

#343DA3 #A36334 #75A334

monochromatic

#161A46 #252C75 #343DA3 #4E58C6 #7C83D5

Accessibility & contrast

On white

8.97

#343DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#343DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DA3

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DA3	#FFFFFF	#000000	##FFFFFF
##343DA3	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA6

Deuteranopia (green-blind)

#0044A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343da3;
/* rgb */ color: rgb(52, 61, 163);
/* oklch */ color: oklch(41.9% 0.163 273.2);

Tailwind

colors: {
  custom: {
    50: '#7a72bf',
    500: '#343da3',
    950: '#000000',
  },
}

SCSS

$custom: #343da3;
$custom-light: #7a72bf;
$custom-dark: #000000;

JSON

{
  "hex": "#343da3",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 235.135,
    "s": 51.628,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41855,
    "c": 0.16257,
    "h": 273.2
  },
  "luminance": 0.06712
}

Semantic roles & 50–950 ramp

primary

#343DA3

secondary

#BEB875

accent

#D04DDB

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343DA3

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

Preview Lab → · Contrast checker → · Palette generator →