#343BD1#343BD1

#343BD1 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.9% C 0.224 H 271.5°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#343BD1
RGB	rgb(52, 59, 209)
HSL	hsl(237, 63%, 51%)
HSV	hsv(237, 75%, 82%)
CMYK	cmyk(75.1%, 71.8%, 0%, 18%)
CIE-LAB	lab(34.92, 47.58, -77.24)
CIE-LCH	lch(34.92, 90.71, 301.63°)
OKLab	oklab(45.89% 0.0058 -0.2236)
OKLCH	oklch(45.89% 0.224 271.5)
XYZ	xyz(14.4849, 8.4599, 61.1788)
Luminance	0.0846 (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

#343BD1 #D1CA34

analogous

#3489D1 #343BD1 #7B34D1

triadic

#343BD1 #D1343B #3BD134

tetradic

#343BD1 #D13489 #D1CA34 #34D17B

square

#343BD1 #D13489 #D1CA34 #34D17B

split-complementary

#343BD1 #D17B34 #89D134

monochromatic

#1A1E71 #252BA3 #343BD1 #666BDC #989BE8

Accessibility & contrast

On white

7.80

#343BD1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#343BD1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BD1

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BD1	#FFFFFF	#000000	##FFFFFF
##343BD1	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AD5

Deuteranopia (green-blind)

#004ACE

Tritanopia (blue-blind)

#006682

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #343bd1;
/* rgb */ color: rgb(52, 59, 209);
/* oklch */ color: oklch(45.9% 0.224 271.5);

Tailwind

colors: {
  custom: {
    50: '#8472e0',
    500: '#343bd1',
    950: '#000000',
  },
}

SCSS

$custom: #343bd1;
$custom-light: #8472e0;
$custom-dark: #000000;

JSON

{
  "hex": "#343bd1",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 209
  },
  "hsl": {
    "h": 237.325,
    "s": 63.052,
    "l": 51.176
  },
  "oklch": {
    "l": 0.45889,
    "c": 0.22366,
    "h": 271.5
  },
  "luminance": 0.08461
}

Semantic roles & 50–950 ramp

primary

#343BD1

secondary

#D3D08E

accent

#DF42E6

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #343BD1

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

Preview Lab → · Contrast checker → · Palette generator →