#343BB8#343BB8

#343BB8 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.193 H 272.7°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#343BB8
RGB	rgb(52, 59, 184)
HSL	hsl(237, 56%, 46%)
HSV	hsv(237, 72%, 72%)
CMYK	cmyk(71.7%, 67.9%, 0%, 27.8%)
CIE-LAB	lab(32.52, 39.09, -66.57)
CIE-LCH	lch(32.52, 77.19, 300.42°)
OKLab	oklab(43.43% 0.009 -0.1924)
OKLCH	oklch(43.43% 0.193 272.7)
XYZ	xyz(11.6290, 7.3175, 46.1377)
Luminance	0.0732 (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

#343BB8 #B8B134

analogous

#347DB8 #343BB8 #6F34B8

triadic

#343BB8 #B8343B #3BB834

tetradic

#343BB8 #B8347D #B8B134 #34B86F

square

#343BB8 #B8347D #B8B134 #34B86F

split-complementary

#343BB8 #B86F34 #7DB834

monochromatic

#191C59 #272C88 #343BB8 #595FD0 #898DDE

Accessibility & contrast

On white

8.52

#343BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#343BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BB8

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BB8	#FFFFFF	#000000	##FFFFFF
##343BB8	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BC

Deuteranopia (green-blind)

#0046B6

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343bb8;
/* rgb */ color: rgb(52, 59, 184);
/* oklch */ color: oklch(43.4% 0.193 272.7);

Tailwind

colors: {
  custom: {
    50: '#7e71ce',
    500: '#343bb8',
    950: '#000000',
  },
}

SCSS

$custom: #343bb8;
$custom-light: #7e71ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343bb8",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 184
  },
  "hsl": {
    "h": 236.818,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43434,
    "c": 0.19265,
    "h": 272.7
  },
  "luminance": 0.07319
}

Semantic roles & 50–950 ramp

primary

#343BB8

secondary

#C8C480

accent

#D749DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343BB8

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

Preview Lab → · Contrast checker → · Palette generator →