#343CA9#343CA9

#343CA9 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.172 H 273.2°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#343CA9
RGB	rgb(52, 60, 169)
HSL	hsl(236, 53%, 43%)
HSV	hsv(236, 69%, 66%)
CMYK	cmyk(69.2%, 64.5%, 0%, 33.7%)
CIE-LAB	lab(31.41, 33.20, -59.46)
CIE-LCH	lch(31.41, 68.10, 299.18°)
OKLab	oklab(42.21% 0.0096 -0.1716)
OKLCH	oklch(42.21% 0.172 273.2)
XYZ	xyz(10.1911, 6.8254, 38.3088)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.13

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343CA9 #A9A134

analogous

#3476A9 #343CA9 #6634A9

triadic

#343CA9 #A9343C #3CA934

tetradic

#343CA9 #A93476 #A9A134 #34A966

square

#343CA9 #A93476 #A9A134 #34A966

split-complementary

#343CA9 #A96634 #76A934

monochromatic

#171B4B #262B7A #343CA9 #5159C9 #8086D8

Accessibility & contrast

On white

8.88

#343CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#343CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CA9

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CA9	#FFFFFF	#000000	##FFFFFF
##343CA9	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343ca9;
/* rgb */ color: rgb(52, 60, 169);
/* oklch */ color: oklch(42.2% 0.172 273.2);

Tailwind

colors: {
  custom: {
    50: '#7b72c4',
    500: '#343ca9',
    950: '#000000',
  },
}

SCSS

$custom: #343ca9;
$custom-light: #7b72c4;
$custom-dark: #000000;

JSON

{
  "hex": "#343ca9",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 169
  },
  "hsl": {
    "h": 235.897,
    "s": 52.941,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4221,
    "c": 0.17189,
    "h": 273.2
  },
  "luminance": 0.06826
}

Semantic roles & 50–950 ramp

primary

#343CA9

secondary

#C1BC78

accent

#D24BDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343CA9

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

Preview Lab → · Contrast checker → · Palette generator →