#343FC0#343FC0

#343FC0 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.9% C 0.198 H 271.7°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#343FC0
RGB	rgb(52, 63, 192)
HSL	hsl(235, 57%, 48%)
HSV	hsv(235, 73%, 75%)
CMYK	cmyk(72.9%, 67.2%, 0%, 24.7%)
CIE-LAB	lab(34.17, 39.41, -68.57)
CIE-LCH	lch(34.17, 79.09, 299.89°)
OKLab	oklab(44.86% 0.0057 -0.1983)
OKLCH	oklch(44.86% 0.198 271.7)
XYZ	xyz(12.7049, 8.0895, 50.7508)
Luminance	0.0809 (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

#343FC0 #C0B534

analogous

#3485C0 #343FC0 #6F34C0

triadic

#343FC0 #C0343F #3FC034

tetradic

#343FC0 #C03485 #C0B534 #34C06F

square

#343FC0 #C03485 #C0B534 #34C06F

split-complementary

#343FC0 #C06F34 #85C034

monochromatic

#1A1F60 #272F90 #343FC0 #5E67D3 #8E94E0

Accessibility & contrast

On white

8.02

#343FC0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#343FC0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343FC0

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343FC0	#FFFFFF	#000000	##FFFFFF
##343FC0	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C4

Deuteranopia (green-blind)

#004ABE

Tritanopia (blue-blind)

#00627A

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #343fc0;
/* rgb */ color: rgb(52, 63, 192);
/* oklch */ color: oklch(44.9% 0.198 271.7);

Tailwind

colors: {
  custom: {
    50: '#8074d4',
    500: '#343fc0',
    950: '#000000',
  },
}

SCSS

$custom: #343fc0;
$custom-light: #8074d4;
$custom-dark: #000000;

JSON

{
  "hex": "#343fc0",
  "rgb": {
    "r": 52,
    "g": 63,
    "b": 192
  },
  "hsl": {
    "h": 235.286,
    "s": 57.377,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44855,
    "c": 0.19837,
    "h": 271.7
  },
  "luminance": 0.08091
}

Semantic roles & 50–950 ramp

primary

#343FC0

secondary

#CBC585

accent

#D547E1

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #343FC0

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

Preview Lab → · Contrast checker → · Palette generator →