#343AA0#343AA0

#343AA0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.162 H 274.1°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#343AA0
RGB	rgb(52, 58, 160)
HSL	hsl(237, 51%, 42%)
HSV	hsv(237, 68%, 63%)
CMYK	cmyk(67.5%, 63.8%, 0%, 37.3%)
CIE-LAB	lab(30.14, 31.29, -56.10)
CIE-LCH	lch(30.14, 64.24, 299.15°)
OKLab	oklab(41.04% 0.0117 -0.1618)
OKLCH	oklch(41.04% 0.162 274.1)
XYZ	xyz(9.2723, 6.2934, 33.9770)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343AA0 #A09A34

analogous

#3470A0 #343AA0 #6434A0

triadic

#343AA0 #A0343A #3AA034

tetradic

#343AA0 #A03470 #A09A34 #34A064

square

#343AA0 #A03470 #A09A34 #34A064

split-complementary

#343AA0 #A06434 #70A034

monochromatic

#161944 #252972 #343AA0 #4C53C5 #7A7FD4

Accessibility & contrast

On white

9.30

#343AA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#343AA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AA0

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AA0	#FFFFFF	#000000	##FFFFFF
##343AA0	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#005467

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #343aa0;
/* rgb */ color: rgb(52, 58, 160);
/* oklch */ color: oklch(41.0% 0.162 274.1);

Tailwind

colors: {
  custom: {
    50: '#7970bd',
    500: '#343aa0',
    950: '#000000',
  },
}

SCSS

$custom: #343aa0;
$custom-light: #7970bd;
$custom-dark: #000000;

JSON

{
  "hex": "#343aa0",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 160
  },
  "hsl": {
    "h": 236.667,
    "s": 50.943,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41042,
    "c": 0.16222,
    "h": 274.1
  },
  "luminance": 0.06294
}

Semantic roles & 50–950 ramp

primary

#343AA0

secondary

#BDB973

accent

#D34DDA

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343AA0

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

Preview Lab → · Contrast checker → · Palette generator →