#343BBA#343BBA

#343BBA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.195 H 272.6°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#343BBA
RGB	rgb(52, 59, 186)
HSL	hsl(237, 56%, 47%)
HSV	hsv(237, 72%, 73%)
CMYK	cmyk(72%, 68.3%, 0%, 27.1%)
CIE-LAB	lab(32.71, 39.78, -67.44)
CIE-LCH	lch(32.71, 78.30, 300.53°)
OKLab	oklab(43.63% 0.0088 -0.195)
OKLCH	oklch(43.63% 0.195 272.6)
XYZ	xyz(11.8401, 7.4020, 47.2496)
Luminance	0.0740 (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

#343BBA #BAB334

analogous

#347EBA #343BBA #7034BA

triadic

#343BBA #BA343B #3BBA34

tetradic

#343BBA #BA347E #BAB334 #34BA70

square

#343BBA #BA347E #BAB334 #34BA70

split-complementary

#343BBA #BA7034 #7EBA34

monochromatic

#191D5A #272C8A #343BBA #5A60D1 #8A8EDE

Accessibility & contrast

On white

8.47

#343BBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#343BBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BBA

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BBA	#FFFFFF	#000000	##FFFFFF
##343BBA	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BE

Deuteranopia (green-blind)

#0047B8

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343bba;
/* rgb */ color: rgb(52, 59, 186);
/* oklch */ color: oklch(43.6% 0.195 272.6);

Tailwind

colors: {
  custom: {
    50: '#7f71d0',
    500: '#343bba',
    950: '#000000',
  },
}

SCSS

$custom: #343bba;
$custom-light: #7f71d0;
$custom-dark: #000000;

JSON

{
  "hex": "#343bba",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 186
  },
  "hsl": {
    "h": 236.866,
    "s": 56.303,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43625,
    "c": 0.19521,
    "h": 272.6
  },
  "luminance": 0.07403
}

Semantic roles & 50–950 ramp

primary

#343BBA

secondary

#C8C581

accent

#D848E0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #343BBA

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

Preview Lab → · Contrast checker → · Palette generator →