#3643BD#3643BD

#3643BD is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.4% C 0.189 H 271.7°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#3643BD
RGB	rgb(54, 67, 189)
HSL	hsl(234, 56%, 48%)
HSV	hsv(234, 71%, 74%)
CMYK	cmyk(71.4%, 64.6%, 0%, 25.9%)
CIE-LAB	lab(34.95, 36.10, -65.53)
CIE-LCH	lch(34.95, 74.81, 298.85°)
OKLab	oklab(45.37% 0.0055 -0.1893)
OKLCH	oklch(45.37% 0.189 271.7)
XYZ	xyz(12.7107, 8.4714, 49.0995)
Luminance	0.0847 (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

#3643BD #BDB036

analogous

#3687BD #3643BD #6C36BD

triadic

#3643BD #BD3643 #43BD36

tetradic

#3643BD #BD3687 #BDB036 #36BD6C

square

#3643BD #BD3687 #BDB036 #36BD6C

split-complementary

#3643BD #BD6C36 #87BD36

monochromatic

#1B215E #28328D #3643BD #5F6AD1 #8F96DF

Accessibility & contrast

On white

7.79

#3643BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3643BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3643BD

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3643BD	#FFFFFF	#000000	##FFFFFF
##3643BD	1.00	7.79	2.69	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C1

Deuteranopia (green-blind)

#004CBB

Tritanopia (blue-blind)

#00637A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3643bd;
/* rgb */ color: rgb(54, 67, 189);
/* oklch */ color: oklch(45.4% 0.189 271.7);

Tailwind

colors: {
  custom: {
    50: '#8077d2',
    500: '#3643bd',
    950: '#000000',
  },
}

SCSS

$custom: #3643bd;
$custom-light: #8077d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3643bd",
  "rgb": {
    "r": 54,
    "g": 67,
    "b": 189
  },
  "hsl": {
    "h": 234.222,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.4537,
    "c": 0.18941,
    "h": 271.7
  },
  "luminance": 0.08473
}

Semantic roles & 50–950 ramp

primary

#3643BD

secondary

#C9C385

accent

#D049DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3643BD

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

Preview Lab → · Contrast checker → · Palette generator →