#343FBC#343FBC

#343FBC is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.5% C 0.193 H 271.8°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#343FBC
RGB	rgb(52, 63, 188)
HSL	hsl(235, 57%, 47%)
HSV	hsv(235, 72%, 74%)
CMYK	cmyk(72.3%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(33.80, 38.01, -66.82)
CIE-LCH	lch(33.80, 76.87, 299.63°)
OKLab	oklab(44.48% 0.0061 -0.1932)
OKLCH	oklch(44.48% 0.193 271.8)
XYZ	xyz(12.2677, 7.9147, 48.4484)
Luminance	0.0792 (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

#343FBC #BCB134

analogous

#3483BC #343FBC #6D34BC

triadic

#343FBC #BC343F #3FBC34

tetradic

#343FBC #BC3483 #BCB134 #34BC6D

square

#343FBC #BC3483 #BCB134 #34BC6D

split-complementary

#343FBC #BC6D34 #83BC34

monochromatic

#191F5C #272F8C #343FBC #5B65D2 #8B92DF

Accessibility & contrast

On white

8.13

#343FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#343FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FBC

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FBC	#FFFFFF	#000000	##FFFFFF
##343FBC	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #343fbc;
/* rgb */ color: rgb(52, 63, 188);
/* oklch */ color: oklch(44.5% 0.193 271.8);

Tailwind

colors: {
  custom: {
    50: '#7f74d1',
    500: '#343fbc',
    950: '#000000',
  },
}

SCSS

$custom: #343fbc;
$custom-light: #7f74d1;
$custom-dark: #000000;

JSON

{
  "hex": "#343fbc",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 235.147,
    "s": 56.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.44479,
    "c": 0.19326,
    "h": 271.8
  },
  "luminance": 0.07916
}

Semantic roles & 50–950 ramp

primary

#343FBC

secondary

#C9C483

accent

#D448E0

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #343FBC

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

Preview Lab → · Contrast checker → · Palette generator →