#343BA6#343BA6

#343BA6 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.169 H 273.6°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#343BA6
RGB	rgb(52, 59, 166)
HSL	hsl(236, 52%, 43%)
HSV	hsv(236, 69%, 65%)
CMYK	cmyk(68.7%, 64.5%, 0%, 34.9%)
CIE-LAB	lab(30.90, 32.78, -58.48)
CIE-LCH	lch(30.90, 67.04, 299.27°)
OKLab	oklab(41.76% 0.0106 -0.1688)
OKLCH	oklch(41.76% 0.169 273.6)
XYZ	xyz(9.8608, 6.6103, 36.8252)
Luminance	0.0661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343BA6 #A69F34

analogous

#3474A6 #343BA6 #6634A6

triadic

#343BA6 #A6343B #3BA634

tetradic

#343BA6 #A63474 #A69F34 #34A666

square

#343BA6 #A63474 #A69F34 #34A666

split-complementary

#343BA6 #A66634 #74A634

monochromatic

#171A49 #252A77 #343BA6 #4F57C8 #7E83D7

Accessibility & contrast

On white

9.04

#343BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#343BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BA6

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BA6	#FFFFFF	#000000	##FFFFFF
##343BA6	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA9

Deuteranopia (green-blind)

#0044A4

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343ba6;
/* rgb */ color: rgb(52, 59, 166);
/* oklch */ color: oklch(41.8% 0.169 273.6);

Tailwind

colors: {
  custom: {
    50: '#7a71c1',
    500: '#343ba6',
    950: '#000000',
  },
}

SCSS

$custom: #343ba6;
$custom-light: #7a71c1;
$custom-dark: #000000;

JSON

{
  "hex": "#343ba6",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 166
  },
  "hsl": {
    "h": 236.316,
    "s": 52.294,
    "l": 42.745
  },
  "oklch": {
    "l": 0.4176,
    "c": 0.16909,
    "h": 273.6
  },
  "luminance": 0.06611
}

Semantic roles & 50–950 ramp

primary

#343BA6

secondary

#C0BB76

accent

#D34CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343BA6

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

Preview Lab → · Contrast checker → · Palette generator →