#343DA1#343DA1

#343DA1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.160 H 273.3°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#343DA1
RGB	rgb(52, 61, 161)
HSL	hsl(235, 51%, 42%)
HSV	hsv(235, 68%, 63%)
CMYK	cmyk(67.7%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(30.97, 29.70, -55.35)
CIE-LCH	lch(30.97, 62.82, 298.22°)
OKLab	oklab(41.68% 0.0092 -0.1596)
OKLCH	oklch(41.68% 0.16 273.3)
XYZ	xyz(9.5158, 6.6399, 34.4915)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DA1 #A19834

analogous

#3474A1 #343DA1 #6234A1

triadic

#343DA1 #A1343D #3DA134

tetradic

#343DA1 #A13474 #A19834 #34A162

square

#343DA1 #A13474 #A19834 #34A162

split-complementary

#343DA1 #A16234 #74A134

monochromatic

#161A44 #252B73 #343DA1 #4D57C5 #7B82D4

Accessibility & contrast

On white

9.02

#343DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#343DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DA1

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DA1	#FFFFFF	#000000	##FFFFFF
##343DA1	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00449F

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343da1;
/* rgb */ color: rgb(52, 61, 161);
/* oklch */ color: oklch(41.7% 0.160 273.3);

Tailwind

colors: {
  custom: {
    50: '#7972be',
    500: '#343da1',
    950: '#000000',
  },
}

SCSS

$custom: #343da1;
$custom-light: #7972be;
$custom-dark: #000000;

JSON

{
  "hex": "#343da1",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 235.046,
    "s": 51.174,
    "l": 41.765
  },
  "oklch": {
    "l": 0.4168,
    "c": 0.15984,
    "h": 273.3
  },
  "luminance": 0.06641
}

Semantic roles & 50–950 ramp

primary

#343DA1

secondary

#BDB774

accent

#CF4DDB

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343DA1

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

Preview Lab → · Contrast checker → · Palette generator →