#343EA9#343EA9

#343EA9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.169 H 272.7°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#343EA9
RGB	rgb(52, 62, 169)
HSL	hsl(235, 53%, 43%)
HSV	hsv(235, 69%, 66%)
CMYK	cmyk(69.2%, 63.3%, 0%, 33.7%)
CIE-LAB	lab(31.90, 31.92, -58.66)
CIE-LCH	lch(31.90, 66.78, 298.55°)
OKLab	oklab(42.57% 0.0081 -0.1693)
OKLCH	oklch(42.57% 0.169 272.7)
XYZ	xyz(10.2978, 7.0389, 38.3444)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343EA9 #A99F34

analogous

#3478A9 #343EA9 #6434A9

triadic

#343EA9 #A9343E #3EA934

tetradic

#343EA9 #A93478 #A99F34 #34A964

square

#343EA9 #A93478 #A99F34 #34A964

split-complementary

#343EA9 #A96434 #78A934

monochromatic

#171C4B #262D7A #343EA9 #515BC9 #8087D8

Accessibility & contrast

On white

8.72

#343EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#343EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EA9

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EA9	#FFFFFF	#000000	##FFFFFF
##343EA9	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AC

Deuteranopia (green-blind)

#0046A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #343ea9;
/* rgb */ color: rgb(52, 62, 169);
/* oklch */ color: oklch(42.6% 0.169 272.7);

Tailwind

colors: {
  custom: {
    50: '#7b73c3',
    500: '#343ea9',
    950: '#000000',
  },
}

SCSS

$custom: #343ea9;
$custom-light: #7b73c3;
$custom-dark: #000000;

JSON

{
  "hex": "#343ea9",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 169
  },
  "hsl": {
    "h": 234.872,
    "s": 52.941,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42569,
    "c": 0.16945,
    "h": 272.7
  },
  "luminance": 0.0704
}

Semantic roles & 50–950 ramp

primary

#343EA9

secondary

#C1BB78

accent

#D04BDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343EA9

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

Preview Lab → · Contrast checker → · Palette generator →