#343F8A#343F8A

#343F8A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.124 H 273.2°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#343F8A
RGB	rgb(52, 63, 138)
HSL	hsl(232, 45%, 37%)
HSV	hsv(232, 62%, 54%)
CMYK	cmyk(62.3%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(29.71, 20.06, -43.35)
CIE-LCH	lch(29.71, 47.76, 294.83°)
OKLab	oklab(40.18% 0.007 -0.1242)
OKLCH	oklch(40.18% 0.124 273.2)
XYZ	xyz(7.7796, 6.1194, 24.8110)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343F8A #8A7F34

analogous

#346A8A #343F8A #54348A

triadic

#343F8A #8A343F #3F8A34

tetradic

#343F8A #8A346A #8A7F34 #348A54

square

#343F8A #8A346A #8A7F34 #348A54

split-complementary

#343F8A #8A5434 #6A8A34

monochromatic

#131631 #232B5E #343F8A #4553B6 #6F7BC9

Accessibility & contrast

On white

9.44

#343F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#343F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343F8A

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343F8A	#FFFFFF	#000000	##FFFFFF
##343F8A	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114A8D

Deuteranopia (green-blind)

#004288

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #343f8a;
/* rgb */ color: rgb(52, 63, 138);
/* oklch */ color: oklch(40.2% 0.124 273.2);

Tailwind

colors: {
  custom: {
    50: '#7473ad',
    500: '#343f8a',
    950: '#000000',
  },
}

SCSS

$custom: #343f8a;
$custom-light: #7473ad;
$custom-dark: #000000;

JSON

{
  "hex": "#343f8a",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 232.326,
    "s": 45.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40178,
    "c": 0.12444,
    "h": 273.2
  },
  "luminance": 0.0612
}

Semantic roles & 50–950 ramp

primary

#343F8A

secondary

#B1A869

accent

#C453D5

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #343F8A

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

Preview Lab → · Contrast checker → · Palette generator →