#343EB9#343EB9

#343EB9 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.191 H 272.1°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#343EB9
RGB	rgb(52, 62, 185)
HSL	hsl(235, 56%, 46%)
HSV	hsv(235, 72%, 73%)
CMYK	cmyk(71.9%, 66.5%, 0%, 27.5%)
CIE-LAB	lab(33.30, 37.58, -65.87)
CIE-LCH	lch(33.30, 75.84, 299.70°)
OKLab	oklab(44.03% 0.007 -0.1904)
OKLCH	oklch(44.03% 0.191 272.1)
XYZ	xyz(11.8928, 7.6769, 46.7446)
Luminance	0.0768 (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

#343EB9 #B9AF34

analogous

#3481B9 #343EB9 #6D34B9

triadic

#343EB9 #B9343E #3EB934

tetradic

#343EB9 #B93481 #B9AF34 #34B96D

square

#343EB9 #B93481 #B9AF34 #34B96D

split-complementary

#343EB9 #B96D34 #81B934

monochromatic

#191E59 #272E89 #343EB9 #5A63D1 #8990DE

Accessibility & contrast

On white

8.28

#343EB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#343EB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EB9

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EB9	#FFFFFF	#000000	##FFFFFF
##343EB9	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BD

Deuteranopia (green-blind)

#0048B7

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #343eb9;
/* rgb */ color: rgb(52, 62, 185);
/* oklch */ color: oklch(44.0% 0.191 272.1);

Tailwind

colors: {
  custom: {
    50: '#7e73cf',
    500: '#343eb9',
    950: '#000000',
  },
}

SCSS

$custom: #343eb9;
$custom-light: #7e73cf;
$custom-dark: #000000;

JSON

{
  "hex": "#343eb9",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 185
  },
  "hsl": {
    "h": 235.489,
    "s": 56.118,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44029,
    "c": 0.19054,
    "h": 272.1
  },
  "luminance": 0.07678
}

Semantic roles & 50–950 ramp

primary

#343EB9

secondary

#C8C381

accent

#D448DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343EB9

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

Preview Lab → · Contrast checker → · Palette generator →