#343E8B#343E8B

#343E8B is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.127 H 273.6°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#343E8B
RGB	rgb(52, 62, 139)
HSL	hsl(233, 46%, 37%)
HSV	hsv(233, 63%, 55%)
CMYK	cmyk(62.6%, 55.4%, 0%, 45.5%)
CIE-LAB	lab(29.51, 21.09, -44.29)
CIE-LCH	lch(29.51, 49.06, 295.47°)
OKLab	oklab(40.05% 0.0081 -0.127)
OKLCH	oklch(40.05% 0.127 273.6)
XYZ	xyz(7.7975, 6.0388, 25.1758)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343E8B #8B8134

analogous

#346A8B #343E8B #55348B

triadic

#343E8B #8B343E #3E8B34

tetradic

#343E8B #8B346A #8B8134 #348B55

square

#343E8B #8B346A #8B8134 #348B55

split-complementary

#343E8B #8B5534 #6A8B34

monochromatic

#131632 #232A5E #343E8B #4552B8 #707AC9

Accessibility & contrast

On white

9.51

#343E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#343E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343E8B

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343E8B	#FFFFFF	#000000	##FFFFFF
##343E8B	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A498E

Deuteranopia (green-blind)

#004289

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #343e8b;
/* rgb */ color: rgb(52, 62, 139);
/* oklch */ color: oklch(40.0% 0.127 273.6);

Tailwind

colors: {
  custom: {
    50: '#7573ad',
    500: '#343e8b',
    950: '#000000',
  },
}

SCSS

$custom: #343e8b;
$custom-light: #7573ad;
$custom-dark: #000000;

JSON

{
  "hex": "#343e8b",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 139
  },
  "hsl": {
    "h": 233.103,
    "s": 45.55,
    "l": 37.451
  },
  "oklch": {
    "l": 0.40049,
    "c": 0.1273,
    "h": 273.6
  },
  "luminance": 0.06039
}

Semantic roles & 50–950 ramp

primary

#343E8B

secondary

#B2A969

accent

#C653D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #343E8B

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

Preview Lab → · Contrast checker → · Palette generator →