#343D9B#343D9B

#343D9B is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.152 H 273.5°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#343D9B
RGB	rgb(52, 61, 155)
HSL	hsl(235, 50%, 41%)
HSV	hsv(235, 66%, 61%)
CMYK	cmyk(66.5%, 60.6%, 0%, 39.2%)
CIE-LAB	lab(30.48, 27.54, -52.52)
CIE-LCH	lch(30.48, 59.30, 297.68°)
OKLab	oklab(41.16% 0.0094 -0.1512)
OKLCH	oklch(41.16% 0.152 273.5)
XYZ	xyz(8.9993, 6.4333, 31.7715)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343D9B #9B9234

analogous

#34709B #343D9B #5E349B

triadic

#343D9B #9B343D #3D9B34

tetradic

#343D9B #9B3470 #9B9234 #349B5E

square

#343D9B #9B3470 #9B9234 #349B5E

split-complementary

#343D9B #9B5E34 #709B34

monochromatic

#15193F #252B6D #343D9B #4A54C2 #7880D2

Accessibility & contrast

On white

9.18

#343D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#343D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343D9B

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343D9B	#FFFFFF	#000000	##FFFFFF
##343D9B	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004399

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #343d9b;
/* rgb */ color: rgb(52, 61, 155);
/* oklch */ color: oklch(41.2% 0.152 273.5);

Tailwind

colors: {
  custom: {
    50: '#7872b9',
    500: '#343d9b',
    950: '#000000',
  },
}

SCSS

$custom: #343d9b;
$custom-light: #7872b9;
$custom-dark: #000000;

JSON

{
  "hex": "#343d9b",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 155
  },
  "hsl": {
    "h": 234.757,
    "s": 49.758,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41162,
    "c": 0.15153,
    "h": 273.5
  },
  "luminance": 0.06434
}

Semantic roles & 50–950 ramp

primary

#343D9B

secondary

#BAB471

accent

#CD4FD9

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343D9B

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

Preview Lab → · Contrast checker → · Palette generator →