#3664CD#3664CD

#3664CD is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.0% C 0.171 H 263.8°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3664CD
RGB	rgb(54, 100, 205)
HSL	hsl(222, 60%, 51%)
HSV	hsv(222, 74%, 80%)
CMYK	cmyk(73.7%, 51.2%, 0%, 19.6%)
CIE-LAB	lab(44.67, 20.74, -59.01)
CIE-LCH	lch(44.67, 62.55, 289.36°)
OKLab	oklab(53.02% -0.0186 -0.1697)
OKLCH	oklch(53.02% 0.171 263.8)
XYZ	xyz(17.0940, 14.3045, 59.6059)
Luminance	0.1431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664CD #CD9F36

analogous

#36AFCD #3664CD #5336CD

triadic

#3664CD #CD3664 #64CD36

tetradic

#3664CD #CD36AF #CD9F36 #36CD53

square

#3664CD #CD36AF #CD9F36 #36CD53

split-complementary

#3664CD #CD5336 #AFCD36

monochromatic

#1B346D #274C9E #3664CD #678AD9 #98B0E5

Accessibility & contrast

On white

5.44

#3664CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3664CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664CD

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664CD	#FFFFFF	#000000	##FFFFFF
##3664CD	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2071D1

Deuteranopia (green-blind)

#0063CB

Tritanopia (blue-blind)

#007D8F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3664cd;
/* rgb */ color: rgb(54, 100, 205);
/* oklch */ color: oklch(53.0% 0.171 263.8);

Tailwind

colors: {
  custom: {
    50: '#818fdd',
    500: '#3664cd',
    950: '#000000',
  },
}

SCSS

$custom: #3664cd;
$custom-light: #818fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3664cd",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 205
  },
  "hsl": {
    "h": 221.722,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.53023,
    "c": 0.17075,
    "h": 263.8
  },
  "luminance": 0.14306
}

Semantic roles & 50–950 ramp

primary

#3664CD

secondary

#D1BC8E

accent

#B344E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3664CD

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

Preview Lab → · Contrast checker → · Palette generator →