#343FAA#343FAA

#343FAA is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.170 H 272.5°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#343FAA
RGB	rgb(52, 63, 170)
HSL	hsl(234, 53%, 44%)
HSV	hsv(234, 69%, 67%)
CMYK	cmyk(69.4%, 62.9%, 0%, 33.3%)
CIE-LAB	lab(32.23, 31.63, -58.71)
CIE-LCH	lch(32.23, 66.69, 298.31°)
OKLab	oklab(42.84% 0.0073 -0.1694)
OKLCH	oklch(42.84% 0.17 272.5)
XYZ	xyz(10.4469, 7.1864, 38.8590)
Luminance	0.0719 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343FAA #AA9F34

analogous

#347AAA #343FAA #6434AA

triadic

#343FAA #AA343F #3FAA34

tetradic

#343FAA #AA347A #AA9F34 #34AA64

square

#343FAA #AA347A #AA9F34 #34AA64

split-complementary

#343FAA #AA6434 #7AAA34

monochromatic

#171C4C #262E7B #343FAA #515DCA #8088D8

Accessibility & contrast

On white

8.62

#343FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#343FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FAA

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FAA	#FFFFFF	#000000	##FFFFFF
##343FAA	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0046A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343faa;
/* rgb */ color: rgb(52, 63, 170);
/* oklch */ color: oklch(42.8% 0.170 272.5);

Tailwind

colors: {
  custom: {
    50: '#7b74c4',
    500: '#343faa',
    950: '#000000',
  },
}

SCSS

$custom: #343faa;
$custom-light: #7b74c4;
$custom-dark: #000000;

JSON

{
  "hex": "#343faa",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 170
  },
  "hsl": {
    "h": 234.407,
    "s": 53.153,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42839,
    "c": 0.16958,
    "h": 272.5
  },
  "luminance": 0.07187
}

Semantic roles & 50–950 ramp

primary

#343FAA

secondary

#C1BB78

accent

#CF4BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343FAA

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

Preview Lab → · Contrast checker → · Palette generator →