#343D9F#343D9F

#343D9F is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.157 H 273.4°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#343D9F
RGB	rgb(52, 61, 159)
HSL	hsl(235, 51%, 41%)
HSV	hsv(235, 67%, 62%)
CMYK	cmyk(67.3%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(30.81, 28.98, -54.41)
CIE-LCH	lch(30.81, 61.65, 298.04°)
OKLab	oklab(41.51% 0.0093 -0.1568)
OKLCH	oklch(41.51% 0.157 273.4)
XYZ	xyz(9.3408, 6.5699, 33.5700)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343D9F #9F9634

analogous

#34739F #343D9F #61349F

triadic

#343D9F #9F343D #3D9F34

tetradic

#343D9F #9F3473 #9F9634 #349F61

square

#343D9F #9F3473 #9F9634 #349F61

split-complementary

#343D9F #9F6134 #739F34

monochromatic

#161A43 #252B71 #343D9F #4C56C4 #7A81D3

Accessibility & contrast

On white

9.07

#343D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#343D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343D9F

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343D9F	#FFFFFF	#000000	##FFFFFF
##343D9F	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA2

Deuteranopia (green-blind)

#00449D

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #343d9f;
/* rgb */ color: rgb(52, 61, 159);
/* oklch */ color: oklch(41.5% 0.157 273.4);

Tailwind

colors: {
  custom: {
    50: '#7972bc',
    500: '#343d9f',
    950: '#000000',
  },
}

SCSS

$custom: #343d9f;
$custom-light: #7972bc;
$custom-dark: #000000;

JSON

{
  "hex": "#343d9f",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 234.953,
    "s": 50.711,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41506,
    "c": 0.15708,
    "h": 273.4
  },
  "luminance": 0.06571
}

Semantic roles & 50–950 ramp

primary

#343D9F

secondary

#BCB673

accent

#CE4EDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #343D9F

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

Preview Lab → · Contrast checker → · Palette generator →