#343AB9#343AB9

#343AB9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.195 H 272.8°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#343AB9
RGB	rgb(52, 58, 185)
HSL	hsl(237, 56%, 46%)
HSV	hsv(237, 72%, 73%)
CMYK	cmyk(71.9%, 68.6%, 0%, 27.5%)
CIE-LAB	lab(32.39, 40.04, -67.38)
CIE-LCH	lch(32.39, 78.38, 300.72°)
OKLab	oklab(43.37% 0.0095 -0.1948)
OKLCH	oklch(43.37% 0.195 272.8)
XYZ	xyz(11.6832, 7.2578, 46.6747)
Luminance	0.0726 (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

#343AB9 #B9B334

analogous

#347DB9 #343AB9 #7134B9

triadic

#343AB9 #B9343A #3AB934

tetradic

#343AB9 #B9347D #B9B334 #34B971

square

#343AB9 #B9347D #B9B334 #34B971

split-complementary

#343AB9 #B97134 #7DB934

monochromatic

#191C59 #272B89 #343AB9 #5A5FD1 #898DDE

Accessibility & contrast

On white

8.57

#343AB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#343AB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AB9

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AB9	#FFFFFF	#000000	##FFFFFF
##343AB9	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BD

Deuteranopia (green-blind)

#0046B7

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343ab9;
/* rgb */ color: rgb(52, 58, 185);
/* oklch */ color: oklch(43.4% 0.195 272.8);

Tailwind

colors: {
  custom: {
    50: '#7f71cf',
    500: '#343ab9',
    950: '#000000',
  },
}

SCSS

$custom: #343ab9;
$custom-light: #7f71cf;
$custom-dark: #000000;

JSON

{
  "hex": "#343ab9",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 185
  },
  "hsl": {
    "h": 237.293,
    "s": 56.118,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43366,
    "c": 0.19504,
    "h": 272.8
  },
  "luminance": 0.07259
}

Semantic roles & 50–950 ramp

primary

#343AB9

secondary

#C8C581

accent

#D948DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #343AB9

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

Preview Lab → · Contrast checker → · Palette generator →