#343BB7#343BB7

#343BB7 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.3% C 0.191 H 272.7°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#343BB7
RGB	rgb(52, 59, 183)
HSL	hsl(237, 56%, 46%)
HSV	hsv(237, 72%, 72%)
CMYK	cmyk(71.6%, 67.8%, 0%, 28.2%)
CIE-LAB	lab(32.43, 38.74, -66.13)
CIE-LCH	lch(32.43, 76.64, 300.36°)
OKLab	oklab(43.34% 0.0091 -0.1912)
OKLCH	oklch(43.34% 0.191 272.7)
XYZ	xyz(11.5245, 7.2757, 45.5876)
Luminance	0.0728 (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

#343BB7 #B7B034

analogous

#347CB7 #343BB7 #6E34B7

triadic

#343BB7 #B7343B #3BB734

tetradic

#343BB7 #B7347C #B7B034 #34B76E

square

#343BB7 #B7347C #B7B034 #34B76E

split-complementary

#343BB7 #B76E34 #7CB734

monochromatic

#191C58 #262C87 #343BB7 #595FD0 #888DDD

Accessibility & contrast

On white

8.55

#343BB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#343BB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BB7

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BB7	#FFFFFF	#000000	##FFFFFF
##343BB7	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BB

Deuteranopia (green-blind)

#0046B5

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343bb7;
/* rgb */ color: rgb(52, 59, 183);
/* oklch */ color: oklch(43.3% 0.191 272.7);

Tailwind

colors: {
  custom: {
    50: '#7e71ce',
    500: '#343bb7',
    950: '#000000',
  },
}

SCSS

$custom: #343bb7;
$custom-light: #7e71ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343bb7",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 183
  },
  "hsl": {
    "h": 236.794,
    "s": 55.745,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43339,
    "c": 0.19138,
    "h": 272.7
  },
  "luminance": 0.07277
}

Semantic roles & 50–950 ramp

primary

#343BB7

secondary

#C7C380

accent

#D749DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343BB7

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

Preview Lab → · Contrast checker → · Palette generator →