#343A9D#343A9D

#343A9D is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.158 H 274.3°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#343A9D
RGB	rgb(52, 58, 157)
HSL	hsl(237, 50%, 41%)
HSV	hsv(237, 67%, 62%)
CMYK	cmyk(66.9%, 63.1%, 0%, 38.4%)
CIE-LAB	lab(29.89, 30.22, -54.70)
CIE-LCH	lch(29.89, 62.49, 298.92°)
OKLab	oklab(40.78% 0.0119 -0.1577)
OKLCH	oklch(40.78% 0.158 274.3)
XYZ	xyz(9.0130, 6.1897, 32.6115)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343A9D #9D9734

analogous

#346E9D #343A9D #62349D

triadic

#343A9D #9D343A #3A9D34

tetradic

#343A9D #9D346E #9D9734 #349D62

square

#343A9D #9D346E #9D9734 #349D62

split-complementary

#343A9D #9D6234 #6E9D34

monochromatic

#161841 #25296F #343A9D #4B52C3 #797ED3

Accessibility & contrast

On white

9.38

#343A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#343A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343A9D

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343A9D	#FFFFFF	#000000	##FFFFFF
##343A9D	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA0

Deuteranopia (green-blind)

#00429B

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #343a9d;
/* rgb */ color: rgb(52, 58, 157);
/* oklch */ color: oklch(40.8% 0.158 274.3);

Tailwind

colors: {
  custom: {
    50: '#7970bb',
    500: '#343a9d',
    950: '#000000',
  },
}

SCSS

$custom: #343a9d;
$custom-light: #7970bb;
$custom-dark: #000000;

JSON

{
  "hex": "#343a9d",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 157
  },
  "hsl": {
    "h": 236.571,
    "s": 50.239,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40776,
    "c": 0.15813,
    "h": 274.3
  },
  "luminance": 0.0619
}

Semantic roles & 50–950 ramp

primary

#343A9D

secondary

#BBB772

accent

#D24EDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343A9D

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

Preview Lab → · Contrast checker → · Palette generator →