#343BBC#343BBC

#343BBC is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.198 H 272.5°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#343BBC
RGB	rgb(52, 59, 188)
HSL	hsl(237, 57%, 47%)
HSV	hsv(237, 72%, 74%)
CMYK	cmyk(72.3%, 68.6%, 0%, 26.3%)
CIE-LAB	lab(32.89, 40.47, -68.32)
CIE-LCH	lch(32.89, 79.40, 300.64°)
OKLab	oklab(43.82% 0.0085 -0.1975)
OKLCH	oklch(43.82% 0.198 272.5)
XYZ	xyz(12.0542, 7.4876, 48.3772)
Luminance	0.0749 (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

#343BBC #BCB534

analogous

#347FBC #343BBC #7134BC

triadic

#343BBC #BC343B #3BBC34

tetradic

#343BBC #BC347F #BCB534 #34BC71

square

#343BBC #BC347F #BCB534 #34BC71

split-complementary

#343BBC #BC7134 #7FBC34

monochromatic

#191D5C #272C8C #343BBC #5B62D2 #8B90DF

Accessibility & contrast

On white

8.41

#343BBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#343BBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BBC

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BBC	#FFFFFF	#000000	##FFFFFF
##343BBC	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C0

Deuteranopia (green-blind)

#0047BA

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343bbc;
/* rgb */ color: rgb(52, 59, 188);
/* oklch */ color: oklch(43.8% 0.198 272.5);

Tailwind

colors: {
  custom: {
    50: '#7f71d1',
    500: '#343bbc',
    950: '#000000',
  },
}

SCSS

$custom: #343bbc;
$custom-light: #7f71d1;
$custom-dark: #000000;

JSON

{
  "hex": "#343bbc",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 188
  },
  "hsl": {
    "h": 236.912,
    "s": 56.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43817,
    "c": 0.19773,
    "h": 272.5
  },
  "luminance": 0.07489
}

Semantic roles & 50–950 ramp

primary

#343BBC

secondary

#C9C683

accent

#D848E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #343BBC

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

Preview Lab → · Contrast checker → · Palette generator →