#343DA9#343DA9

#343DA9 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.171 H 273.0°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#343DA9
RGB	rgb(52, 61, 169)
HSL	hsl(235, 53%, 43%)
HSV	hsv(235, 69%, 66%)
CMYK	cmyk(69.2%, 63.9%, 0%, 33.7%)
CIE-LAB	lab(31.65, 32.56, -59.06)
CIE-LCH	lch(31.65, 67.44, 298.87°)
OKLab	oklab(42.39% 0.0088 -0.1704)
OKLCH	oklch(42.39% 0.171 273)
XYZ	xyz(10.2440, 6.9312, 38.3264)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343DA9 #A9A034

analogous

#3477A9 #343DA9 #6534A9

triadic

#343DA9 #A9343D #3DA934

tetradic

#343DA9 #A93477 #A9A034 #34A965

square

#343DA9 #A93477 #A9A034 #34A965

split-complementary

#343DA9 #A96534 #77A934

monochromatic

#171B4B #262C7A #343DA9 #515AC9 #8086D8

Accessibility & contrast

On white

8.80

#343DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#343DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DA9

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DA9	#FFFFFF	#000000	##FFFFFF
##343DA9	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343da9;
/* rgb */ color: rgb(52, 61, 169);
/* oklch */ color: oklch(42.4% 0.171 273.0);

Tailwind

colors: {
  custom: {
    50: '#7b72c3',
    500: '#343da9',
    950: '#000000',
  },
}

SCSS

$custom: #343da9;
$custom-light: #7b72c3;
$custom-dark: #000000;

JSON

{
  "hex": "#343da9",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 169
  },
  "hsl": {
    "h": 235.385,
    "s": 52.941,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42388,
    "c": 0.17068,
    "h": 273
  },
  "luminance": 0.06932
}

Semantic roles & 50–950 ramp

primary

#343DA9

secondary

#C1BB78

accent

#D14BDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343DA9

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

Preview Lab → · Contrast checker → · Palette generator →