#3664CC#3664CC

#3664CC is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.9% C 0.169 H 263.7°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#3664CC
RGB	rgb(54, 100, 204)
HSL	hsl(222, 60%, 51%)
HSV	hsv(222, 74%, 80%)
CMYK	cmyk(73.5%, 51%, 0%, 20%)
CIE-LAB	lab(44.60, 20.37, -58.55)
CIE-LCH	lch(44.60, 61.99, 289.18°)
OKLab	oklab(52.95% -0.0187 -0.1684)
OKLCH	oklch(52.95% 0.169 263.7)
XYZ	xyz(16.9737, 14.2564, 58.9722)
Luminance	0.1426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664CC #CC9E36

analogous

#36AFCC #3664CC #5336CC

triadic

#3664CC #CC3664 #64CC36

tetradic

#3664CC #CC36AF #CC9E36 #36CC53

square

#3664CC #CC36AF #CC9E36 #36CC53

split-complementary

#3664CC #CC5336 #AFCC36

monochromatic

#1B346C #284C9D #3664CC #678AD8 #98AFE5

Accessibility & contrast

On white

5.45

#3664CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#3664CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664CC

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664CC	#FFFFFF	#000000	##FFFFFF
##3664CC	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2271D0

Deuteranopia (green-blind)

#0063CA

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3664cc;
/* rgb */ color: rgb(54, 100, 204);
/* oklch */ color: oklch(52.9% 0.169 263.7);

Tailwind

colors: {
  custom: {
    50: '#818fdc',
    500: '#3664cc',
    950: '#000000',
  },
}

SCSS

$custom: #3664cc;
$custom-light: #818fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3664cc",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 204
  },
  "hsl": {
    "h": 221.6,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.5295,
    "c": 0.16941,
    "h": 263.7
  },
  "luminance": 0.14258
}

Semantic roles & 50–950 ramp

primary

#3664CC

secondary

#D0BC8E

accent

#B245E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3664CC

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

Preview Lab → · Contrast checker → · Palette generator →