#343EA4#343EA4

#343EA4 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.163 H 272.9°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#343EA4
RGB	rgb(52, 62, 164)
HSL	hsl(235, 52%, 42%)
HSV	hsv(235, 68%, 64%)
CMYK	cmyk(68.3%, 62.2%, 0%, 35.7%)
CIE-LAB	lab(31.47, 30.13, -56.34)
CIE-LCH	lch(31.47, 63.89, 298.13°)
OKLab	oklab(42.13% 0.0083 -0.1625)
OKLCH	oklch(42.13% 0.163 272.9)
XYZ	xyz(9.8374, 6.8547, 35.9194)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343EA4 #A49A34

analogous

#3476A4 #343EA4 #6234A4

triadic

#343EA4 #A4343E #3EA434

tetradic

#343EA4 #A43476 #A49A34 #34A462

square

#343EA4 #A43476 #A49A34 #34A462

split-complementary

#343EA4 #A46234 #76A434

monochromatic

#171B47 #252C76 #343EA4 #4E59C7 #7D85D6

Accessibility & contrast

On white

8.86

#343EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#343EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EA4

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EA4	#FFFFFF	#000000	##FFFFFF
##343EA4	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA7

Deuteranopia (green-blind)

#0045A2

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343ea4;
/* rgb */ color: rgb(52, 62, 164);
/* oklch */ color: oklch(42.1% 0.163 272.9);

Tailwind

colors: {
  custom: {
    50: '#7a73c0',
    500: '#343ea4',
    950: '#000000',
  },
}

SCSS

$custom: #343ea4;
$custom-light: #7a73c0;
$custom-dark: #000000;

JSON

{
  "hex": "#343ea4",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 164
  },
  "hsl": {
    "h": 234.643,
    "s": 51.852,
    "l": 42.353
  },
  "oklch": {
    "l": 0.42127,
    "c": 0.16268,
    "h": 272.9
  },
  "luminance": 0.06856
}

Semantic roles & 50–950 ramp

primary

#343EA4

secondary

#BFB875

accent

#CF4CDB

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343EA4

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

Preview Lab → · Contrast checker → · Palette generator →