#343C8B#343C8B

#343C8B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.130 H 274.5°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#343C8B
RGB	rgb(52, 60, 139)
HSL	hsl(234, 46%, 37%)
HSV	hsv(234, 63%, 55%)
CMYK	cmyk(62.6%, 56.8%, 0%, 45.5%)
CIE-LAB	lab(28.97, 22.44, -45.17)
CIE-LCH	lch(28.97, 50.43, 296.42°)
OKLab	oklab(39.64% 0.0101 -0.1296)
OKLCH	oklch(39.64% 0.13 274.5)
XYZ	xyz(7.6907, 5.8253, 25.1402)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343C8B #8B8334

analogous

#34678B #343C8B #58348B

triadic

#343C8B #8B343C #3C8B34

tetradic

#343C8B #8B3467 #8B8334 #348B58

square

#343C8B #8B3467 #8B8334 #348B58

split-complementary

#343C8B #8B5834 #678B34

monochromatic

#131632 #23295E #343C8B #454FB8 #7078C9

Accessibility & contrast

On white

9.70

#343C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#343C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343C8B

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343C8B	#FFFFFF	#000000	##FFFFFF
##343C8B	1.00	9.70	2.17	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00488E

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #343c8b;
/* rgb */ color: rgb(52, 60, 139);
/* oklch */ color: oklch(39.6% 0.130 274.5);

Tailwind

colors: {
  custom: {
    50: '#7571ad',
    500: '#343c8b',
    950: '#000000',
  },
}

SCSS

$custom: #343c8b;
$custom-light: #7571ad;
$custom-dark: #000000;

JSON

{
  "hex": "#343c8b",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 139
  },
  "hsl": {
    "h": 234.483,
    "s": 45.55,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39643,
    "c": 0.13004,
    "h": 274.5
  },
  "luminance": 0.05826
}

Semantic roles & 50–950 ramp

primary

#343C8B

secondary

#B2AB69

accent

#C953D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #343C8B

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

Preview Lab → · Contrast checker → · Palette generator →