#343CB8#343CB8

#343CB8 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.192 H 272.5°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#343CB8
RGB	rgb(52, 60, 184)
HSL	hsl(236, 56%, 46%)
HSV	hsv(236, 72%, 72%)
CMYK	cmyk(71.7%, 67.4%, 0%, 27.8%)
CIE-LAB	lab(32.75, 38.47, -66.19)
CIE-LCH	lch(32.75, 76.56, 300.17°)
OKLab	oklab(43.6% 0.0084 -0.1913)
OKLCH	oklch(43.6% 0.192 272.5)
XYZ	xyz(11.6809, 7.4213, 46.1550)
Luminance	0.0742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343CB8 #B8B034

analogous

#347EB8 #343CB8 #6E34B8

triadic

#343CB8 #B8343C #3CB834

tetradic

#343CB8 #B8347E #B8B034 #34B86E

square

#343CB8 #B8347E #B8B034 #34B86E

split-complementary

#343CB8 #B86E34 #7EB834

monochromatic

#191D59 #272C88 #343CB8 #5960D0 #898EDE

Accessibility & contrast

On white

8.45

#343CB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#343CB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CB8

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CB8	#FFFFFF	#000000	##FFFFFF
##343CB8	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343cb8;
/* rgb */ color: rgb(52, 60, 184);
/* oklch */ color: oklch(43.6% 0.192 272.5);

Tailwind

colors: {
  custom: {
    50: '#7e72ce',
    500: '#343cb8',
    950: '#000000',
  },
}

SCSS

$custom: #343cb8;
$custom-light: #7e72ce;
$custom-dark: #000000;

JSON

{
  "hex": "#343cb8",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 184
  },
  "hsl": {
    "h": 236.364,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43599,
    "c": 0.19152,
    "h": 272.5
  },
  "luminance": 0.07422
}

Semantic roles & 50–950 ramp

primary

#343CB8

secondary

#C8C380

accent

#D649DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #343CB8

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

Preview Lab → · Contrast checker → · Palette generator →