#343D8B#343D8B

#343D8B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.129 H 274.1°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#343D8B
RGB	rgb(52, 61, 139)
HSL	hsl(234, 46%, 37%)
HSV	hsv(234, 63%, 55%)
CMYK	cmyk(62.6%, 56.1%, 0%, 45.5%)
CIE-LAB	lab(29.24, 21.77, -44.73)
CIE-LCH	lch(29.24, 49.74, 295.95°)
OKLab	oklab(39.85% 0.0091 -0.1283)
OKLCH	oklch(39.85% 0.129 274.1)
XYZ	xyz(7.7436, 5.9310, 25.1578)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343D8B #8B8234

analogous

#34698B #343D8B #56348B

triadic

#343D8B #8B343D #3D8B34

tetradic

#343D8B #8B3469 #8B8234 #348B56

square

#343D8B #8B3469 #8B8234 #348B56

split-complementary

#343D8B #8B5634 #698B34

monochromatic

#131632 #23295E #343D8B #4551B8 #7079C9

Accessibility & contrast

On white

9.60

#343D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#343D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343D8B

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343D8B	#FFFFFF	#000000	##FFFFFF
##343D8B	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05498E

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #343d8b;
/* rgb */ color: rgb(52, 61, 139);
/* oklch */ color: oklch(39.8% 0.129 274.1);

Tailwind

colors: {
  custom: {
    50: '#7572ad',
    500: '#343d8b',
    950: '#000000',
  },
}

SCSS

$custom: #343d8b;
$custom-light: #7572ad;
$custom-dark: #000000;

JSON

{
  "hex": "#343d8b",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 139
  },
  "hsl": {
    "h": 233.793,
    "s": 45.55,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39845,
    "c": 0.12866,
    "h": 274.1
  },
  "luminance": 0.05932
}

Semantic roles & 50–950 ramp

primary

#343D8B

secondary

#B2AA69

accent

#C853D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #343D8B

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

Preview Lab → · Contrast checker → · Palette generator →