#343AAB#343AAB

#343AAB is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.177 H 273.5°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#343AAB
RGB	rgb(52, 58, 171)
HSL	hsl(237, 53%, 44%)
HSV	hsv(237, 70%, 67%)
CMYK	cmyk(69.6%, 66.1%, 0%, 32.9%)
CIE-LAB	lab(31.10, 35.17, -61.15)
CIE-LCH	lch(31.10, 70.55, 299.91°)
OKLab	oklab(42.04% 0.0109 -0.1766)
OKLCH	oklch(42.04% 0.177 273.5)
XYZ	xyz(10.2775, 6.6955, 39.2709)
Luminance	0.0670 (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

#343AAB #ABA534

analogous

#3475AB #343AAB #6934AB

triadic

#343AAB #AB343A #3AAB34

tetradic

#343AAB #AB3475 #ABA534 #34AB69

square

#343AAB #AB3475 #ABA534 #34AB69

split-complementary

#343AAB #AB6934 #75AB34

monochromatic

#171A4D #262A7C #343AAB #5258CA #8185D9

Accessibility & contrast

On white

8.98

#343AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#343AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AAB

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AAB	#FFFFFF	#000000	##FFFFFF
##343AAB	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAF

Deuteranopia (green-blind)

#0044A9

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #343aab;
/* rgb */ color: rgb(52, 58, 171);
/* oklch */ color: oklch(42.0% 0.177 273.5);

Tailwind

colors: {
  custom: {
    50: '#7c70c5',
    500: '#343aab',
    950: '#000000',
  },
}

SCSS

$custom: #343aab;
$custom-light: #7c70c5;
$custom-dark: #000000;

JSON

{
  "hex": "#343aab",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 171
  },
  "hsl": {
    "h": 236.975,
    "s": 53.363,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42043,
    "c": 0.17694,
    "h": 273.5
  },
  "luminance": 0.06696
}

Semantic roles & 50–950 ramp

primary

#343AAB

secondary

#C2BE79

accent

#D54BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #343AAB

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

Preview Lab → · Contrast checker → · Palette generator →