#3643BF#3643BF

#3643BF is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.6% C 0.192 H 271.6°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#3643BF
RGB	rgb(54, 67, 191)
HSL	hsl(234, 56%, 48%)
HSV	hsv(234, 72%, 75%)
CMYK	cmyk(71.7%, 64.9%, 0%, 25.1%)
CIE-LAB	lab(35.12, 36.80, -66.42)
CIE-LCH	lch(35.12, 75.93, 298.99°)
OKLab	oklab(45.55% 0.0054 -0.1919)
OKLCH	oklch(45.55% 0.192 271.6)
XYZ	xyz(12.9293, 8.5589, 50.2508)
Luminance	0.0856 (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

#3643BF #BFB236

analogous

#3687BF #3643BF #6E36BF

triadic

#3643BF #BF3643 #43BF36

tetradic

#3643BF #BF3687 #BFB236 #36BF6E

square

#3643BF #BF3687 #BFB236 #36BF6E

split-complementary

#3643BF #BF6E36 #87BF36

monochromatic

#1B2260 #29328F #3643BF #606BD2 #9097E0

Accessibility & contrast

On white

7.74

#3643BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3643BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3643BF

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3643BF	#FFFFFF	#000000	##FFFFFF
##3643BF	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C3

Deuteranopia (green-blind)

#004CBD

Tritanopia (blue-blind)

#00647B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3643bf;
/* rgb */ color: rgb(54, 67, 191);
/* oklch */ color: oklch(45.6% 0.192 271.6);

Tailwind

colors: {
  custom: {
    50: '#8077d3',
    500: '#3643bf',
    950: '#000000',
  },
}

SCSS

$custom: #3643bf;
$custom-light: #8077d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3643bf",
  "rgb": {
    "r": 54,
    "g": 67,
    "b": 191
  },
  "hsl": {
    "h": 234.307,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.45551,
    "c": 0.19201,
    "h": 271.6
  },
  "luminance": 0.0856
}

Semantic roles & 50–950 ramp

primary

#3643BF

secondary

#CAC487

accent

#D149DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3643BF

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

Preview Lab → · Contrast checker → · Palette generator →