#343FC5#343FC5

#343FC5 is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.3% C 0.205 H 271.5°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#343FC5
RGB	rgb(52, 63, 197)
HSL	hsl(235, 58%, 49%)
HSV	hsv(235, 74%, 77%)
CMYK	cmyk(73.6%, 68%, 0%, 22.7%)
CIE-LAB	lab(34.63, 41.14, -70.74)
CIE-LCH	lch(34.63, 81.83, 300.18°)
OKLab	oklab(45.33% 0.0052 -0.2046)
OKLCH	oklch(45.33% 0.205 271.5)
XYZ	xyz(13.2683, 8.3149, 53.7182)
Luminance	0.0832 (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

#343FC5 #C5BA34

analogous

#3488C5 #343FC5 #7234C5

triadic

#343FC5 #C5343F #3FC534

tetradic

#343FC5 #C53488 #C5BA34 #34C572

square

#343FC5 #C53488 #C5BA34 #34C572

split-complementary

#343FC5 #C57234 #88C534

monochromatic

#1A2064 #273095 #343FC5 #616AD5 #9197E2

Accessibility & contrast

On white

7.89

#343FC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#343FC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FC5

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FC5	#FFFFFF	#000000	##FFFFFF
##343FC5	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C9

Deuteranopia (green-blind)

#004BC3

Tritanopia (blue-blind)

#00637D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #343fc5;
/* rgb */ color: rgb(52, 63, 197);
/* oklch */ color: oklch(45.3% 0.205 271.5);

Tailwind

colors: {
  custom: {
    50: '#8174d8',
    500: '#343fc5',
    950: '#000000',
  },
}

SCSS

$custom: #343fc5;
$custom-light: #8174d8;
$custom-dark: #000000;

JSON

{
  "hex": "#343fc5",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 197
  },
  "hsl": {
    "h": 235.448,
    "s": 58.233,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4533,
    "c": 0.2047,
    "h": 271.5
  },
  "luminance": 0.08316
}

Semantic roles & 50–950 ramp

primary

#343FC5

secondary

#CDC888

accent

#D646E1

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #343FC5

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

Preview Lab → · Contrast checker → · Palette generator →