#343B71#343B71

#343B71 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.092 H 275.5°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#343B71
RGB	rgb(52, 59, 113)
HSL	hsl(233, 37%, 32%)
HSV	hsv(233, 54%, 44%)
CMYK	cmyk(54%, 47.8%, 0%, 55.7%)
CIE-LAB	lab(26.88, 13.83, -32.23)
CIE-LCH	lch(26.88, 35.07, 293.22°)
OKLab	oklab(37.49% 0.0088 -0.0916)
OKLCH	oklch(37.49% 0.092 275.5)
XYZ	xyz(5.9598, 5.0499, 16.2803)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343B71 #716A34

analogous

#345971 #343B71 #4C3471

triadic

#343B71 #71343B #3B7134

tetradic

#343B71 #713459 #716A34 #34714C

square

#343B71 #713459 #716A34 #34714C

split-complementary

#343B71 #714C34 #597134

monochromatic

#0D0F1D #212547 #343B71 #47519B #6770B9

Accessibility & contrast

On white

10.45

#343B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#343B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343B71

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343B71	#FFFFFF	#000000	##FFFFFF
##343B71	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244273

Deuteranopia (green-blind)

#1D3D70

Tritanopia (blue-blind)

#1A4750

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #343b71;
/* rgb */ color: rgb(52, 59, 113);
/* oklch */ color: oklch(37.5% 0.092 275.5);

Tailwind

colors: {
  custom: {
    50: '#70709a',
    500: '#343b71',
    950: '#000000',
  },
}

SCSS

$custom: #343b71;
$custom-light: #70709a;
$custom-dark: #000000;

JSON

{
  "hex": "#343b71",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 113
  },
  "hsl": {
    "h": 233.115,
    "s": 36.97,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37487,
    "c": 0.09203,
    "h": 275.5
  },
  "luminance": 0.0505
}

Semantic roles & 50–950 ramp

primary

#343B71

secondary

#A19A60

accent

#C05BCD

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #343B71

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

Preview Lab → · Contrast checker → · Palette generator →