#343DA8#343DA8

#343DA8 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.169 H 273.0°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#343DA8
RGB	rgb(52, 61, 168)
HSL	hsl(235, 53%, 43%)
HSV	hsv(235, 69%, 66%)
CMYK	cmyk(69%, 63.7%, 0%, 34.1%)
CIE-LAB	lab(31.56, 32.20, -58.60)
CIE-LCH	lch(31.56, 66.86, 298.79°)
OKLab	oklab(42.3% 0.0089 -0.1691)
OKLCH	oklch(42.3% 0.169 273)
XYZ	xyz(10.1504, 6.8938, 37.8339)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DA8 #A89F34

analogous

#3477A8 #343DA8 #6534A8

triadic

#343DA8 #A8343D #3DA834

tetradic

#343DA8 #A83477 #A89F34 #34A865

square

#343DA8 #A83477 #A89F34 #34A865

split-complementary

#343DA8 #A86534 #77A834

monochromatic

#171B4B #262C79 #343DA8 #505AC9 #7F86D7

Accessibility & contrast

On white

8.83

#343DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#343DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DA8

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DA8	#FFFFFF	#000000	##FFFFFF
##343DA8	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0045A6

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343da8;
/* rgb */ color: rgb(52, 61, 168);
/* oklch */ color: oklch(42.3% 0.169 273.0);

Tailwind

colors: {
  custom: {
    50: '#7b72c3',
    500: '#343da8',
    950: '#000000',
  },
}

SCSS

$custom: #343da8;
$custom-light: #7b72c3;
$custom-dark: #000000;

JSON

{
  "hex": "#343da8",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 168
  },
  "hsl": {
    "h": 235.345,
    "s": 52.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42299,
    "c": 0.16933,
    "h": 273
  },
  "luminance": 0.06895
}

Semantic roles & 50–950 ramp

primary

#343DA8

secondary

#C0BB77

accent

#D14CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343DA8

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

Preview Lab → · Contrast checker → · Palette generator →