#343BAC#343BAC

#343BAC is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.177 H 273.3°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#343BAC
RGB	rgb(52, 59, 172)
HSL	hsl(237, 54%, 44%)
HSV	hsv(237, 70%, 67%)
CMYK	cmyk(69.8%, 65.7%, 0%, 32.5%)
CIE-LAB	lab(31.43, 34.89, -61.22)
CIE-LCH	lch(31.43, 70.46, 299.68°)
OKLab	oklab(42.31% 0.0101 -0.1768)
OKLCH	oklch(42.31% 0.177 273.3)
XYZ	xyz(10.4240, 6.8356, 39.7918)
Luminance	0.0684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343BAC #ACA534

analogous

#3477AC #343BAC #6934AC

triadic

#343BAC #AC343B #3BAC34

tetradic

#343BAC #AC3477 #ACA534 #34AC69

square

#343BAC #AC3477 #ACA534 #34AC69

split-complementary

#343BAC #AC6934 #77AC34

monochromatic

#181B4E #262B7D #343BAC #5259CB #8186D9

Accessibility & contrast

On white

8.87

#343BAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#343BAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BAC

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BAC	#FFFFFF	#000000	##FFFFFF
##343BAC	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B0

Deuteranopia (green-blind)

#0044AA

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #343bac;
/* rgb */ color: rgb(52, 59, 172);
/* oklch */ color: oklch(42.3% 0.177 273.3);

Tailwind

colors: {
  custom: {
    50: '#7c71c6',
    500: '#343bac',
    950: '#000000',
  },
}

SCSS

$custom: #343bac;
$custom-light: #7c71c6;
$custom-dark: #000000;

JSON

{
  "hex": "#343bac",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 172
  },
  "hsl": {
    "h": 236.5,
    "s": 53.571,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42308,
    "c": 0.17707,
    "h": 273.3
  },
  "luminance": 0.06837
}

Semantic roles & 50–950 ramp

primary

#343BAC

secondary

#C2BE79

accent

#D44BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #343BAC

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

Preview Lab → · Contrast checker → · Palette generator →