#343AC5#343AC5

#343AC5 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.5% C 0.210 H 272.2°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#343AC5
RGB	rgb(52, 58, 197)
HSL	hsl(238, 58%, 49%)
HSV	hsv(238, 74%, 77%)
CMYK	cmyk(73.6%, 70.6%, 0%, 22.7%)
CIE-LAB	lab(33.53, 44.14, -72.55)
CIE-LCH	lch(33.53, 84.92, 301.32°)
OKLab	oklab(44.54% 0.008 -0.2099)
OKLCH	oklch(44.54% 0.21 272.2)
XYZ	xyz(13.0039, 7.7860, 53.6300)
Luminance	0.0779 (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

#343AC5 #C5BF34

analogous

#3483C5 #343AC5 #7734C5

triadic

#343AC5 #C5343A #3AC534

tetradic

#343AC5 #C53483 #C5BF34 #34C577

square

#343AC5 #C53483 #C5BF34 #34C577

split-complementary

#343AC5 #C57734 #83C534

monochromatic

#1A1D64 #272C95 #343AC5 #6166D5 #9195E2

Accessibility & contrast

On white

8.21

#343AC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#343AC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AC5

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AC5	#FFFFFF	#000000	##FFFFFF
##343AC5	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C9

Deuteranopia (green-blind)

#0048C2

Tritanopia (blue-blind)

#00617B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #343ac5;
/* rgb */ color: rgb(52, 58, 197);
/* oklch */ color: oklch(44.5% 0.210 272.2);

Tailwind

colors: {
  custom: {
    50: '#8271d8',
    500: '#343ac5',
    950: '#000000',
  },
}

SCSS

$custom: #343ac5;
$custom-light: #8271d8;
$custom-dark: #000000;

JSON

{
  "hex": "#343ac5",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 197
  },
  "hsl": {
    "h": 237.517,
    "s": 58.233,
    "l": 48.824
  },
  "oklch": {
    "l": 0.44539,
    "c": 0.21005,
    "h": 272.2
  },
  "luminance": 0.07787
}

Semantic roles & 50–950 ramp

primary

#343AC5

secondary

#CDCA88

accent

#DB46E1

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #343AC5

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

Preview Lab → · Contrast checker → · Palette generator →