#343C8F#343C8F

#343C8F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.136 H 274.3°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#343C8F
RGB	rgb(52, 60, 143)
HSL	hsl(235, 47%, 38%)
HSV	hsv(235, 64%, 56%)
CMYK	cmyk(63.6%, 58%, 0%, 43.9%)
CIE-LAB	lab(29.27, 23.88, -47.14)
CIE-LCH	lch(29.27, 52.84, 296.87°)
OKLab	oklab(39.97% 0.0103 -0.1354)
OKLCH	oklch(39.97% 0.136 274.3)
XYZ	xyz(7.9883, 5.9443, 26.7077)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343C8F #8F8734

analogous

#34698F #343C8F #59348F

triadic

#343C8F #8F343C #3C8F34

tetradic

#343C8F #8F3469 #8F8734 #348F59

square

#343C8F #8F3469 #8F8734 #348F59

split-complementary

#343C8F #8F5934 #698F34

monochromatic

#131635 #242962 #343C8F #454FBB #727ACC

Accessibility & contrast

On white

9.59

#343C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#343C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343C8F

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343C8F	#FFFFFF	#000000	##FFFFFF
##343C8F	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #343c8f;
/* rgb */ color: rgb(52, 60, 143);
/* oklch */ color: oklch(40.0% 0.136 274.3);

Tailwind

colors: {
  custom: {
    50: '#7671b0',
    500: '#343c8f',
    950: '#000000',
  },
}

SCSS

$custom: #343c8f;
$custom-light: #7671b0;
$custom-dark: #000000;

JSON

{
  "hex": "#343c8f",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 234.725,
    "s": 46.667,
    "l": 38.235
  },
  "oklch": {
    "l": 0.39966,
    "c": 0.13584,
    "h": 274.3
  },
  "luminance": 0.05945
}

Semantic roles & 50–950 ramp

primary

#343C8F

secondary

#B4AD6B

accent

#CB51D6

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#090711

muted

#7B7A80

Preview Lab

Preview with #343C8F

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

Preview Lab → · Contrast checker → · Palette generator →