#343EB4#343EB4

#343EB4 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.184 H 272.3°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#343EB4
RGB	rgb(52, 62, 180)
HSL	hsl(235, 55%, 45%)
HSV	hsv(235, 71%, 71%)
CMYK	cmyk(71.1%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(32.85, 35.82, -63.65)
CIE-LCH	lch(32.85, 73.04, 299.37°)
OKLab	oklab(43.57% 0.0074 -0.1839)
OKLCH	oklch(43.57% 0.184 272.3)
XYZ	xyz(11.3742, 7.4695, 44.0135)
Luminance	0.0747 (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

#343EB4 #B4AA34

analogous

#347EB4 #343EB4 #6A34B4

triadic

#343EB4 #B4343E #3EB434

tetradic

#343EB4 #B4347E #B4AA34 #34B46A

square

#343EB4 #B4347E #B4AA34 #34B46A

split-complementary

#343EB4 #B46A34 #7EB434

monochromatic

#191D55 #262E85 #343EB4 #5760CE #868DDC

Accessibility & contrast

On white

8.42

#343EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#343EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EB4

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EB4	#FFFFFF	#000000	##FFFFFF
##343EB4	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343eb4;
/* rgb */ color: rgb(52, 62, 180);
/* oklch */ color: oklch(43.6% 0.184 272.3);

Tailwind

colors: {
  custom: {
    50: '#7d73cb',
    500: '#343eb4',
    950: '#000000',
  },
}

SCSS

$custom: #343eb4;
$custom-light: #7d73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#343eb4",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 235.313,
    "s": 55.172,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43565,
    "c": 0.18405,
    "h": 272.3
  },
  "luminance": 0.07471
}

Semantic roles & 50–950 ramp

primary

#343EB4

secondary

#C6C07E

accent

#D349DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343EB4

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

Preview Lab → · Contrast checker → · Palette generator →