#343EB8#343EB8

#343EB8 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.189 H 272.1°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#343EB8
RGB	rgb(52, 62, 184)
HSL	hsl(235, 56%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(71.7%, 66.3%, 0%, 27.8%)
CIE-LAB	lab(33.21, 37.23, -65.43)
CIE-LCH	lch(33.21, 75.28, 299.64°)
OKLab	oklab(43.94% 0.0071 -0.1891)
OKLCH	oklch(43.94% 0.189 272.1)
XYZ	xyz(11.7876, 7.6348, 46.1906)
Luminance	0.0764 (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

#343EB8 #B8AE34

analogous

#3480B8 #343EB8 #6C34B8

triadic

#343EB8 #B8343E #3EB834

tetradic

#343EB8 #B83480 #B8AE34 #34B86C

square

#343EB8 #B83480 #B8AE34 #34B86C

split-complementary

#343EB8 #B86C34 #80B834

monochromatic

#191E59 #272E88 #343EB8 #5962D0 #898FDE

Accessibility & contrast

On white

8.31

#343EB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#343EB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EB8

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EB8	#FFFFFF	#000000	##FFFFFF
##343EB8	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0048B6

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #343eb8;
/* rgb */ color: rgb(52, 62, 184);
/* oklch */ color: oklch(43.9% 0.189 272.1);

Tailwind

colors: {
  custom: {
    50: '#7e73ce',
    500: '#343eb8',
    950: '#000000',
  },
}

SCSS

$custom: #343eb8;
$custom-light: #7e73ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343eb8",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 184
  },
  "hsl": {
    "h": 235.455,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43936,
    "c": 0.18924,
    "h": 272.1
  },
  "luminance": 0.07636
}

Semantic roles & 50–950 ramp

primary

#343EB8

secondary

#C8C280

accent

#D449DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343EB8

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

Preview Lab → · Contrast checker → · Palette generator →