#343AB8#343AB8

#343AB8 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.194 H 272.8°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#343AB8
RGB	rgb(52, 58, 184)
HSL	hsl(237, 56%, 46%)
HSV	hsv(237, 72%, 72%)
CMYK	cmyk(71.7%, 68.5%, 0%, 27.8%)
CIE-LAB	lab(32.29, 39.70, -66.94)
CIE-LCH	lch(32.29, 77.82, 300.67°)
OKLab	oklab(43.27% 0.0096 -0.1935)
OKLCH	oklch(43.27% 0.194 272.8)
XYZ	xyz(11.5781, 7.2157, 46.1207)
Luminance	0.0722 (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

#343AB8 #B8B234

analogous

#347CB8 #343AB8 #7034B8

triadic

#343AB8 #B8343A #3AB834

tetradic

#343AB8 #B8347C #B8B234 #34B870

square

#343AB8 #B8347C #B8B234 #34B870

split-complementary

#343AB8 #B87034 #7CB834

monochromatic

#191C59 #272B88 #343AB8 #595ED0 #898DDE

Accessibility & contrast

On white

8.59

#343AB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#343AB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AB8

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AB8	#FFFFFF	#000000	##FFFFFF
##343AB8	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BC

Deuteranopia (green-blind)

#0046B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343ab8;
/* rgb */ color: rgb(52, 58, 184);
/* oklch */ color: oklch(43.3% 0.194 272.8);

Tailwind

colors: {
  custom: {
    50: '#7f71ce',
    500: '#343ab8',
    950: '#000000',
  },
}

SCSS

$custom: #343ab8;
$custom-light: #7f71ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343ab8",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 184
  },
  "hsl": {
    "h": 237.273,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.4327,
    "c": 0.19377,
    "h": 272.8
  },
  "luminance": 0.07217
}

Semantic roles & 50–950 ramp

primary

#343AB8

secondary

#C8C480

accent

#D849DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #343AB8

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

Preview Lab → · Contrast checker → · Palette generator →