#343C8A#343C8A

#343C8A is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.129 H 274.5°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#343C8A
RGB	rgb(52, 60, 138)
HSL	hsl(234, 45%, 37%)
HSV	hsv(234, 62%, 54%)
CMYK	cmyk(62.3%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(28.89, 22.08, -44.67)
CIE-LCH	lch(28.89, 49.83, 296.30°)
OKLab	oklab(39.56% 0.0101 -0.1282)
OKLCH	oklch(39.56% 0.129 274.5)
XYZ	xyz(7.6180, 5.7962, 24.7572)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343C8A #8A8234

analogous

#34678A #343C8A #57348A

triadic

#343C8A #8A343C #3C8A34

tetradic

#343C8A #8A3467 #8A8234 #348A57

square

#343C8A #8A3467 #8A8234 #348A57

split-complementary

#343C8A #8A5734 #678A34

monochromatic

#131531 #23295E #343C8A #454FB6 #6F78C9

Accessibility & contrast

On white

9.72

#343C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#343C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343C8A

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343C8A	#FFFFFF	#000000	##FFFFFF
##343C8A	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02488D

Deuteranopia (green-blind)

#004088

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #343c8a;
/* rgb */ color: rgb(52, 60, 138);
/* oklch */ color: oklch(39.6% 0.129 274.5);

Tailwind

colors: {
  custom: {
    50: '#7571ad',
    500: '#343c8a',
    950: '#000000',
  },
}

SCSS

$custom: #343c8a;
$custom-light: #7571ad;
$custom-dark: #000000;

JSON

{
  "hex": "#343c8a",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 234.419,
    "s": 45.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39563,
    "c": 0.12858,
    "h": 274.5
  },
  "luminance": 0.05797
}

Semantic roles & 50–950 ramp

primary

#343C8A

secondary

#B1AA69

accent

#C953D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #343C8A

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

Preview Lab → · Contrast checker → · Palette generator →