#343BA4#343BA4

#343BA4 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.166 H 273.7°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#343BA4
RGB	rgb(52, 59, 164)
HSL	hsl(236, 52%, 42%)
HSV	hsv(236, 68%, 64%)
CMYK	cmyk(68.3%, 64%, 0%, 35.7%)
CIE-LAB	lab(30.73, 32.07, -57.56)
CIE-LCH	lch(30.73, 65.89, 299.12°)
OKLab	oklab(41.58% 0.0107 -0.1661)
OKLCH	oklch(41.58% 0.166 273.7)
XYZ	xyz(9.6787, 6.5374, 35.8665)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343BA4 #A49D34

analogous

#3473A4 #343BA4 #6534A4

triadic

#343BA4 #A4343B #3BA434

tetradic

#343BA4 #A43473 #A49D34 #34A465

square

#343BA4 #A43473 #A49D34 #34A465

split-complementary

#343BA4 #A46534 #73A434

monochromatic

#171A47 #252A76 #343BA4 #4E56C7 #7D82D6

Accessibility & contrast

On white

9.10

#343BA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#343BA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BA4

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BA4	#FFFFFF	#000000	##FFFFFF
##343BA4	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA7

Deuteranopia (green-blind)

#0043A2

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #343ba4;
/* rgb */ color: rgb(52, 59, 164);
/* oklch */ color: oklch(41.6% 0.166 273.7);

Tailwind

colors: {
  custom: {
    50: '#7a71c0',
    500: '#343ba4',
    950: '#000000',
  },
}

SCSS

$custom: #343ba4;
$custom-light: #7a71c0;
$custom-dark: #000000;

JSON

{
  "hex": "#343ba4",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 164
  },
  "hsl": {
    "h": 236.25,
    "s": 51.852,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4158,
    "c": 0.1664,
    "h": 273.7
  },
  "luminance": 0.06538
}

Semantic roles & 50–950 ramp

primary

#343BA4

secondary

#BFBA75

accent

#D24CDB

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343BA4

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

Preview Lab → · Contrast checker → · Palette generator →