#343CBF#343CBF

#343CBF is a dark, highly saturated blue. Relative luminance 0.077; OKLCH L 44.3% C 0.200 H 272.2°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#343CBF
RGB	rgb(52, 60, 191)
HSL	hsl(237, 57%, 48%)
HSV	hsv(237, 73%, 75%)
CMYK	cmyk(72.8%, 68.6%, 0%, 25.1%)
CIE-LAB	lab(33.40, 40.89, -69.25)
CIE-LCH	lch(33.40, 80.42, 300.56°)
OKLab	oklab(44.27% 0.0076 -0.2003)
OKLCH	oklch(44.27% 0.2 272.2)
XYZ	xyz(12.4328, 7.7221, 50.1154)
Luminance	0.0772 (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

#343CBF #BFB734

analogous

#3481BF #343CBF #7234BF

triadic

#343CBF #BF343C #3CBF34

tetradic

#343CBF #BF3481 #BFB734 #34BF72

square

#343CBF #BF3481 #BFB734 #34BF72

split-complementary

#343CBF #BF7234 #81BF34

monochromatic

#1A1E5F #272D8F #343CBF #5D64D3 #8D92E0

Accessibility & contrast

On white

8.25

#343CBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#343CBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CBF

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CBF	#FFFFFF	#000000	##FFFFFF
##343CBF	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C3

Deuteranopia (green-blind)

#0048BD

Tritanopia (blue-blind)

#006079

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #343cbf;
/* rgb */ color: rgb(52, 60, 191);
/* oklch */ color: oklch(44.3% 0.200 272.2);

Tailwind

colors: {
  custom: {
    50: '#8072d3',
    500: '#343cbf',
    950: '#000000',
  },
}

SCSS

$custom: #343cbf;
$custom-light: #8072d3;
$custom-dark: #000000;

JSON

{
  "hex": "#343cbf",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 191
  },
  "hsl": {
    "h": 236.547,
    "s": 57.202,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44268,
    "c": 0.20043,
    "h": 272.2
  },
  "luminance": 0.07723
}

Semantic roles & 50–950 ramp

primary

#343CBF

secondary

#CAC684

accent

#D847E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #343CBF

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

Preview Lab → · Contrast checker → · Palette generator →