#343EA7#343EA7

#343EA7 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.167 H 272.8°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#343EA7
RGB	rgb(52, 62, 167)
HSL	hsl(235, 53%, 43%)
HSV	hsv(235, 69%, 65%)
CMYK	cmyk(68.9%, 62.9%, 0%, 34.5%)
CIE-LAB	lab(31.73, 31.20, -57.73)
CIE-LCH	lch(31.73, 65.63, 298.39°)
OKLab	oklab(42.39% 0.0082 -0.1666)
OKLCH	oklch(42.39% 0.167 272.8)
XYZ	xyz(10.1115, 6.9644, 37.3631)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343EA7 #A79D34

analogous

#3477A7 #343EA7 #6434A7

triadic

#343EA7 #A7343E #3EA734

tetradic

#343EA7 #A73477 #A79D34 #34A764

square

#343EA7 #A73477 #A79D34 #34A764

split-complementary

#343EA7 #A76434 #77A734

monochromatic

#171B4A #252D78 #343EA7 #505AC8 #7E86D7

Accessibility & contrast

On white

8.78

#343EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#343EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EA7

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EA7	#FFFFFF	#000000	##FFFFFF
##343EA7	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #343ea7;
/* rgb */ color: rgb(52, 62, 167);
/* oklch */ color: oklch(42.4% 0.167 272.8);

Tailwind

colors: {
  custom: {
    50: '#7a73c2',
    500: '#343ea7',
    950: '#000000',
  },
}

SCSS

$custom: #343ea7;
$custom-light: #7a73c2;
$custom-dark: #000000;

JSON

{
  "hex": "#343ea7",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 167
  },
  "hsl": {
    "h": 234.783,
    "s": 52.511,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42391,
    "c": 0.16676,
    "h": 272.8
  },
  "luminance": 0.06965
}

Semantic roles & 50–950 ramp

primary

#343EA7

secondary

#C0BA77

accent

#CF4CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343EA7

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

Preview Lab → · Contrast checker → · Palette generator →