#343EB1#343EB1

#343EB1 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.3% C 0.180 H 272.4°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#343EB1
RGB	rgb(52, 62, 177)
HSL	hsl(235, 55%, 45%)
HSV	hsv(235, 71%, 69%)
CMYK	cmyk(70.6%, 65%, 0%, 30.6%)
CIE-LAB	lab(32.59, 34.76, -62.30)
CIE-LCH	lch(32.59, 71.34, 299.16°)
OKLab	oklab(43.29% 0.0076 -0.1799)
OKLCH	oklch(43.29% 0.18 272.4)
XYZ	xyz(11.0719, 7.3486, 42.4214)
Luminance	0.0735 (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

#343EB1 #B1A734

analogous

#347DB1 #343EB1 #6934B1

triadic

#343EB1 #B1343E #3EB134

tetradic

#343EB1 #B1347D #B1A734 #34B169

square

#343EB1 #B1347D #B1A734 #34B169

split-complementary

#343EB1 #B16934 #7DB134

monochromatic

#181D52 #262D82 #343EB1 #555FCD #848BDB

Accessibility & contrast

On white

8.50

#343EB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#343EB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343EB1

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343EB1	#FFFFFF	#000000	##FFFFFF
##343EB1	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0047AF

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343eb1;
/* rgb */ color: rgb(52, 62, 177);
/* oklch */ color: oklch(43.3% 0.180 272.4);

Tailwind

colors: {
  custom: {
    50: '#7d73c9',
    500: '#343eb1',
    950: '#000000',
  },
}

SCSS

$custom: #343eb1;
$custom-light: #7d73c9;
$custom-dark: #000000;

JSON

{
  "hex": "#343eb1",
  "rgb": {
    "r": 52,
    "g": 62,
    "b": 177
  },
  "hsl": {
    "h": 235.2,
    "s": 54.585,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4329,
    "c": 0.18011,
    "h": 272.4
  },
  "luminance": 0.0735
}

Semantic roles & 50–950 ramp

primary

#343EB1

secondary

#C5BF7C

accent

#D24ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343EB1

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

Preview Lab → · Contrast checker → · Palette generator →