#343AA3#343AA3

#343AA3 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.3% C 0.166 H 274.0°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#343AA3
RGB	rgb(52, 58, 163)
HSL	hsl(237, 52%, 42%)
HSV	hsv(237, 68%, 64%)
CMYK	cmyk(68.1%, 64.4%, 0%, 36.1%)
CIE-LAB	lab(30.40, 32.35, -57.49)
CIE-LCH	lch(30.40, 65.97, 299.37°)
OKLab	oklab(41.31% 0.0115 -0.1659)
OKLCH	oklch(41.31% 0.166 274)
XYZ	xyz(9.5379, 6.3997, 35.3758)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343AA3 #A39D34

analogous

#3471A3 #343AA3 #6634A3

triadic

#343AA3 #A3343A #3AA334

tetradic

#343AA3 #A33471 #A39D34 #34A366

square

#343AA3 #A33471 #A39D34 #34A366

split-complementary

#343AA3 #A36634 #71A334

monochromatic

#161946 #252975 #343AA3 #4E54C6 #7C81D5

Accessibility & contrast

On white

9.21

#343AA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#343AA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AA3

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AA3	#FFFFFF	#000000	##FFFFFF
##343AA3	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA6

Deuteranopia (green-blind)

#0043A1

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #343aa3;
/* rgb */ color: rgb(52, 58, 163);
/* oklch */ color: oklch(41.3% 0.166 274.0);

Tailwind

colors: {
  custom: {
    50: '#7a70bf',
    500: '#343aa3',
    950: '#000000',
  },
}

SCSS

$custom: #343aa3;
$custom-light: #7a70bf;
$custom-dark: #000000;

JSON

{
  "hex": "#343aa3",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 163
  },
  "hsl": {
    "h": 236.757,
    "s": 51.628,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41311,
    "c": 0.16628,
    "h": 274
  },
  "luminance": 0.06401
}

Semantic roles & 50–950 ramp

primary

#343AA3

secondary

#BEBA75

accent

#D34DDB

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343AA3

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

Preview Lab → · Contrast checker → · Palette generator →