#343CB3#343CB3

#343CB3 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.185 H 272.7°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#343CB3
RGB	rgb(52, 60, 179)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 70%)
CMYK	cmyk(70.9%, 66.5%, 0%, 29.8%)
CIE-LAB	lab(32.29, 36.73, -63.97)
CIE-LCH	lch(32.29, 73.77, 299.86°)
OKLab	oklab(43.13% 0.0088 -0.1849)
OKLCH	oklch(43.13% 0.185 272.7)
XYZ	xyz(11.1660, 7.2154, 43.4433)
Luminance	0.0722 (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

#343CB3 #B3AB34

analogous

#347CB3 #343CB3 #6B34B3

triadic

#343CB3 #B3343C #3CB334

tetradic

#343CB3 #B3347C #B3AB34 #34B36B

square

#343CB3 #B3347C #B3AB34 #34B36B

split-complementary

#343CB3 #B36B34 #7CB334

monochromatic

#181C54 #262C84 #343CB3 #565ECE #868BDC

Accessibility & contrast

On white

8.60

#343CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#343CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CB3

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CB3	#FFFFFF	#000000	##FFFFFF
##343CB3	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B7

Deuteranopia (green-blind)

#0046B1

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #343cb3;
/* rgb */ color: rgb(52, 60, 179);
/* oklch */ color: oklch(43.1% 0.185 272.7);

Tailwind

colors: {
  custom: {
    50: '#7d72cb',
    500: '#343cb3',
    950: '#000000',
  },
}

SCSS

$custom: #343cb3;
$custom-light: #7d72cb;
$custom-dark: #000000;

JSON

{
  "hex": "#343cb3",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 179
  },
  "hsl": {
    "h": 236.22,
    "s": 54.978,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43129,
    "c": 0.18507,
    "h": 272.7
  },
  "luminance": 0.07216
}

Semantic roles & 50–950 ramp

primary

#343CB3

secondary

#C5C17D

accent

#D549DE

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343CB3

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

Preview Lab → · Contrast checker → · Palette generator →