#343AC3#343AC3

#343AC3 is a dark, highly saturated blue. Relative luminance 0.077; OKLCH L 44.3% C 0.208 H 272.3°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#343AC3
RGB	rgb(52, 58, 195)
HSL	hsl(237, 58%, 48%)
HSV	hsv(237, 73%, 76%)
CMYK	cmyk(73.3%, 70.3%, 0%, 23.5%)
CIE-LAB	lab(33.34, 43.46, -71.69)
CIE-LCH	lch(33.34, 83.84, 301.22°)
OKLab	oklab(44.34% 0.0082 -0.2074)
OKLCH	oklch(44.34% 0.208 272.3)
XYZ	xyz(12.7762, 7.6950, 52.4311)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.91

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343AC3 #C3BD34

analogous

#3481C3 #343AC3 #7634C3

triadic

#343AC3 #C3343A #3AC334

tetradic

#343AC3 #C33481 #C3BD34 #34C376

square

#343AC3 #C33481 #C3BD34 #34C376

split-complementary

#343AC3 #C37634 #81C334

monochromatic

#1A1D62 #272C93 #343AC3 #6065D5 #9093E1

Accessibility & contrast

On white

8.27

#343AC3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#343AC3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AC3

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AC3	#FFFFFF	#000000	##FFFFFF
##343AC3	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C7

Deuteranopia (green-blind)

#0048C0

Tritanopia (blue-blind)

#00607A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #343ac3;
/* rgb */ color: rgb(52, 58, 195);
/* oklch */ color: oklch(44.3% 0.208 272.3);

Tailwind

colors: {
  custom: {
    50: '#8171d6',
    500: '#343ac3',
    950: '#000000',
  },
}

SCSS

$custom: #343ac3;
$custom-light: #8171d6;
$custom-dark: #000000;

JSON

{
  "hex": "#343ac3",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 195
  },
  "hsl": {
    "h": 237.483,
    "s": 57.895,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44341,
    "c": 0.20758,
    "h": 272.3
  },
  "luminance": 0.07696
}

Semantic roles & 50–950 ramp

primary

#343AC3

secondary

#CCC987

accent

#DB47E1

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #343AC3

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

Preview Lab → · Contrast checker → · Palette generator →