#343AB2#343AB2

#343AB2 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.186 H 273.2°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#343AB2
RGB	rgb(52, 58, 178)
HSL	hsl(237, 55%, 45%)
HSV	hsv(237, 71%, 70%)
CMYK	cmyk(70.8%, 67.4%, 0%, 30.2%)
CIE-LAB	lab(31.74, 37.62, -64.29)
CIE-LCH	lch(31.74, 74.49, 300.33°)
OKLab	oklab(42.7% 0.0103 -0.1858)
OKLCH	oklch(42.7% 0.186 273.2)
XYZ	xyz(10.9624, 6.9695, 42.8784)
Luminance	0.0697 (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

#343AB2 #B2AC34

analogous

#3479B2 #343AB2 #6D34B2

triadic

#343AB2 #B2343A #3AB234

tetradic

#343AB2 #B23479 #B2AC34 #34B26D

square

#343AB2 #B23479 #B2AC34 #34B26D

split-complementary

#343AB2 #B26D34 #79B234

monochromatic

#181B53 #262B83 #343AB2 #565BCE #8589DB

Accessibility & contrast

On white

8.77

#343AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#343AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AB2

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AB2	#FFFFFF	#000000	##FFFFFF
##343AB2	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #343ab2;
/* rgb */ color: rgb(52, 58, 178);
/* oklch */ color: oklch(42.7% 0.186 273.2);

Tailwind

colors: {
  custom: {
    50: '#7d70ca',
    500: '#343ab2',
    950: '#000000',
  },
}

SCSS

$custom: #343ab2;
$custom-light: #7d70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#343ab2",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 178
  },
  "hsl": {
    "h": 237.143,
    "s": 54.783,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42698,
    "c": 0.18607,
    "h": 273.2
  },
  "luminance": 0.06971
}

Semantic roles & 50–950 ramp

primary

#343AB2

secondary

#C5C27D

accent

#D74ADE

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #343AB2

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

Preview Lab → · Contrast checker → · Palette generator →