#343CA1#343CA1

#343CA1 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.161 H 273.6°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#343CA1
RGB	rgb(52, 60, 161)
HSL	hsl(236, 51%, 42%)
HSV	hsv(236, 68%, 63%)
CMYK	cmyk(67.7%, 62.7%, 0%, 36.9%)
CIE-LAB	lab(30.72, 30.35, -55.76)
CIE-LCH	lch(30.72, 63.48, 298.56°)
OKLab	oklab(41.5% 0.01 -0.1608)
OKLCH	oklch(41.5% 0.161 273.6)
XYZ	xyz(9.4629, 6.5341, 34.4738)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343CA1 #A19934

analogous

#3473A1 #343CA1 #6334A1

triadic

#343CA1 #A1343C #3CA134

tetradic

#343CA1 #A13473 #A19934 #34A163

square

#343CA1 #A13473 #A19934 #34A163

split-complementary

#343CA1 #A16334 #73A134

monochromatic

#161A44 #252B73 #343CA1 #4D56C5 #7B82D4

Accessibility & contrast

On white

9.10

#343CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#343CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343CA1

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343CA1	#FFFFFF	#000000	##FFFFFF
##343CA1	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00439F

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #343ca1;
/* rgb */ color: rgb(52, 60, 161);
/* oklch */ color: oklch(41.5% 0.161 273.6);

Tailwind

colors: {
  custom: {
    50: '#7971be',
    500: '#343ca1',
    950: '#000000',
  },
}

SCSS

$custom: #343ca1;
$custom-light: #7971be;
$custom-dark: #000000;

JSON

{
  "hex": "#343ca1",
  "rgb": {
    "r": 52,
    "g": 60,
    "b": 161
  },
  "hsl": {
    "h": 235.596,
    "s": 51.174,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41495,
    "c": 0.16109,
    "h": 273.6
  },
  "luminance": 0.06535
}

Semantic roles & 50–950 ramp

primary

#343CA1

secondary

#BDB874

accent

#D04DDB

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343CA1

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

Preview Lab → · Contrast checker → · Palette generator →