#343FB7#343FB7

#343FB7 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.187 H 272.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#343FB7
RGB	rgb(52, 63, 183)
HSL	hsl(235, 56%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(71.6%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(33.36, 36.25, -64.60)
CIE-LCH	lch(33.36, 74.08, 299.30°)
OKLab	oklab(44.02% 0.0065 -0.1867)
OKLCH	oklch(44.02% 0.187 272)
XYZ	xyz(11.7380, 7.7028, 45.6587)
Luminance	0.0770 (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

#343FB7 #B7AC34

analogous

#3480B7 #343FB7 #6A34B7

triadic

#343FB7 #B7343F #3FB734

tetradic

#343FB7 #B73480 #B7AC34 #34B76A

square

#343FB7 #B73480 #B7AC34 #34B76A

split-complementary

#343FB7 #B76A34 #80B734

monochromatic

#191E58 #262F87 #343FB7 #5963D0 #888FDD

Accessibility & contrast

On white

8.27

#343FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#343FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FB7

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FB7	#FFFFFF	#000000	##FFFFFF
##343FB7	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#0048B5

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #343fb7;
/* rgb */ color: rgb(52, 63, 183);
/* oklch */ color: oklch(44.0% 0.187 272.0);

Tailwind

colors: {
  custom: {
    50: '#7e74ce',
    500: '#343fb7',
    950: '#000000',
  },
}

SCSS

$custom: #343fb7;
$custom-light: #7e74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343fb7",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 234.962,
    "s": 55.745,
    "l": 46.078
  },
  "oklch": {
    "l": 0.44015,
    "c": 0.18679,
    "h": 272
  },
  "luminance": 0.07704
}

Semantic roles & 50–950 ramp

primary

#343FB7

secondary

#C7C180

accent

#D249DF

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343FB7

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

Preview Lab → · Contrast checker → · Palette generator →