#343EA6#343EA6

#343EA6 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.165 H 272.8°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#343EA6
RGB	rgb(52, 62, 166)
HSL	hsl(235, 52%, 43%)
HSV	hsv(235, 69%, 65%)
CMYK	cmyk(68.7%, 62.7%, 0%, 34.9%)
CIE-LAB	lab(31.64, 30.84, -57.27)
CIE-LCH	lch(31.64, 65.05, 298.31°)
OKLab	oklab(42.3% 0.0082 -0.1652)
OKLCH	oklch(42.3% 0.165 272.8)
XYZ	xyz(10.0194, 6.9276, 36.8781)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343EA6 #A69C34

analogous

#3477A6 #343EA6 #6334A6

triadic

#343EA6 #A6343E #3EA634

tetradic

#343EA6 #A63477 #A69C34 #34A663

square

#343EA6 #A63477 #A69C34 #34A663

split-complementary

#343EA6 #A66334 #77A634

monochromatic

#171B49 #252D77 #343EA6 #4F5AC8 #7E86D7

Accessibility & contrast

On white

8.80

#343EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#343EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EA6

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EA6	#FFFFFF	#000000	##FFFFFF
##343EA6	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0045A4

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343ea6;
/* rgb */ color: rgb(52, 62, 166);
/* oklch */ color: oklch(42.3% 0.165 272.8);

Tailwind

colors: {
  custom: {
    50: '#7a73c1',
    500: '#343ea6',
    950: '#000000',
  },
}

SCSS

$custom: #343ea6;
$custom-light: #7a73c1;
$custom-dark: #000000;

JSON

{
  "hex": "#343ea6",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 166
  },
  "hsl": {
    "h": 234.737,
    "s": 52.294,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42303,
    "c": 0.1654,
    "h": 272.8
  },
  "luminance": 0.06928
}

Semantic roles & 50–950 ramp

primary

#343EA6

secondary

#C0B976

accent

#CF4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343EA6

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

Preview Lab → · Contrast checker → · Palette generator →