#343AB5#343AB5

#343AB5 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.190 H 273.0°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#343AB5
RGB	rgb(52, 58, 181)
HSL	hsl(237, 55%, 46%)
HSV	hsv(237, 71%, 71%)
CMYK	cmyk(71.3%, 68%, 0%, 29%)
CIE-LAB	lab(32.01, 38.66, -65.62)
CIE-LCH	lch(32.01, 76.16, 300.51°)
OKLab	oklab(42.98% 0.0099 -0.1897)
OKLCH	oklch(42.98% 0.19 273)
XYZ	xyz(11.2669, 7.0913, 44.4821)
Luminance	0.0709 (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

#343AB5 #B5AF34

analogous

#347AB5 #343AB5 #6E34B5

triadic

#343AB5 #B5343A #3AB534

tetradic

#343AB5 #B5347A #B5AF34 #34B56E

square

#343AB5 #B5347A #B5AF34 #34B56E

split-complementary

#343AB5 #B56E34 #7AB534

monochromatic

#191C56 #262B85 #343AB5 #575DCF #878BDC

Accessibility & contrast

On white

8.68

#343AB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#343AB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AB5

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AB5	#FFFFFF	#000000	##FFFFFF
##343AB5	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B9

Deuteranopia (green-blind)

#0045B3

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #343ab5;
/* rgb */ color: rgb(52, 58, 181);
/* oklch */ color: oklch(43.0% 0.190 273.0);

Tailwind

colors: {
  custom: {
    50: '#7e71cc',
    500: '#343ab5',
    950: '#000000',
  },
}

SCSS

$custom: #343ab5;
$custom-light: #7e71cc;
$custom-dark: #000000;

JSON

{
  "hex": "#343ab5",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 181
  },
  "hsl": {
    "h": 237.209,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.42983,
    "c": 0.18994,
    "h": 273
  },
  "luminance": 0.07092
}

Semantic roles & 50–950 ramp

primary

#343AB5

secondary

#C6C37F

accent

#D849DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #343AB5

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

Preview Lab → · Contrast checker → · Palette generator →