#343EA3#343EA3

#343EA3 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.0% C 0.161 H 273.0°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#343EA3
RGB	rgb(52, 62, 163)
HSL	hsl(235, 52%, 42%)
HSV	hsv(235, 68%, 64%)
CMYK	cmyk(68.1%, 62%, 0%, 36.1%)
CIE-LAB	lab(31.39, 29.77, -55.87)
CIE-LCH	lch(31.39, 63.31, 298.05°)
OKLab	oklab(42.04% 0.0083 -0.1611)
OKLCH	oklch(42.04% 0.161 273)
XYZ	xyz(9.7474, 6.8188, 35.4457)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343EA3 #A39934

analogous

#3475A3 #343EA3 #6234A3

triadic

#343EA3 #A3343E #3EA334

tetradic

#343EA3 #A33475 #A39934 #34A362

square

#343EA3 #A33475 #A39934 #34A362

split-complementary

#343EA3 #A36234 #75A334

monochromatic

#161B46 #252C75 #343EA3 #4E59C6 #7C84D5

Accessibility & contrast

On white

8.88

#343EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#343EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EA3

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EA3	#FFFFFF	#000000	##FFFFFF
##343EA3	1.00	8.88	2.36	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0045A1

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343ea3;
/* rgb */ color: rgb(52, 62, 163);
/* oklch */ color: oklch(42.0% 0.161 273.0);

Tailwind

colors: {
  custom: {
    50: '#7a73bf',
    500: '#343ea3',
    950: '#000000',
  },
}

SCSS

$custom: #343ea3;
$custom-light: #7a73bf;
$custom-dark: #000000;

JSON

{
  "hex": "#343ea3",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 163
  },
  "hsl": {
    "h": 234.595,
    "s": 51.628,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4204,
    "c": 0.16131,
    "h": 273
  },
  "luminance": 0.0682
}

Semantic roles & 50–950 ramp

primary

#343EA3

secondary

#BEB875

accent

#CE4DDB

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343EA3

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

Preview Lab → · Contrast checker → · Palette generator →