#343BC4#343BC4

#343BC4 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.6% C 0.208 H 272.1°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#343BC4
RGB	rgb(52, 59, 196)
HSL	hsl(237, 58%, 49%)
HSV	hsv(237, 73%, 77%)
CMYK	cmyk(73.5%, 69.9%, 0%, 23.1%)
CIE-LAB	lab(33.65, 43.20, -71.76)
CIE-LCH	lch(33.65, 83.77, 301.05°)
OKLab	oklab(44.6% 0.0076 -0.2076)
OKLCH	oklch(44.6% 0.208 272.1)
XYZ	xyz(12.9406, 7.8422, 53.0455)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.68

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343BC4 #C4BD34

analogous

#3483C4 #343BC4 #7534C4

triadic

#343BC4 #C4343B #3BC434

tetradic

#343BC4 #C43483 #C4BD34 #34C475

square

#343BC4 #C43483 #C4BD34 #34C475

split-complementary

#343BC4 #C47534 #83C434

monochromatic

#1A1E63 #272C94 #343BC4 #6066D5 #9195E2

Accessibility & contrast

On white

8.18

#343BC4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#343BC4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BC4

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BC4	#FFFFFF	#000000	##FFFFFF
##343BC4	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C8

Deuteranopia (green-blind)

#0048C1

Tritanopia (blue-blind)

#00617B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #343bc4;
/* rgb */ color: rgb(52, 59, 196);
/* oklch */ color: oklch(44.6% 0.208 272.1);

Tailwind

colors: {
  custom: {
    50: '#8172d7',
    500: '#343bc4',
    950: '#000000',
  },
}

SCSS

$custom: #343bc4;
$custom-light: #8172d7;
$custom-dark: #000000;

JSON

{
  "hex": "#343bc4",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 196
  },
  "hsl": {
    "h": 237.083,
    "s": 58.065,
    "l": 48.627
  },
  "oklch": {
    "l": 0.44595,
    "c": 0.20776,
    "h": 272.1
  },
  "luminance": 0.07844
}

Semantic roles & 50–950 ramp

primary

#343BC4

secondary

#CCC987

accent

#DA47E1

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #343BC4

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

Preview Lab → · Contrast checker → · Palette generator →