#3664D3#3664D3

#3664D3 is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.5% C 0.179 H 264.2°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3664D3
RGB	rgb(54, 100, 211)
HSL	hsl(222, 64%, 52%)
HSV	hsv(222, 74%, 83%)
CMYK	cmyk(74.4%, 52.6%, 0%, 17.3%)
CIE-LAB	lab(45.08, 22.96, -61.78)
CIE-LCH	lch(45.08, 65.91, 290.38°)
OKLab	oklab(53.47% -0.018 -0.1779)
OKLCH	oklch(53.47% 0.179 264.2)
XYZ	xyz(17.8322, 14.5998, 63.4936)
Luminance	0.1460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664D3 #D3A536

analogous

#36B3D3 #3664D3 #5636D3

triadic

#3664D3 #D33664 #64D336

tetradic

#3664D3 #D336B3 #D3A536 #36D356

square

#3664D3 #D336B3 #D3A536 #36D356

split-complementary

#3664D3 #D35636 #B3D336

monochromatic

#1A3475 #254BA7 #3664D3 #688BDE #9AB1E9

Accessibility & contrast

On white

5.36

#3664D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#3664D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664D3

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664D3	#FFFFFF	#000000	##FFFFFF
##3664D3	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1372D7

Deuteranopia (green-blind)

#0064D1

Tritanopia (blue-blind)

#007F92

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3664d3;
/* rgb */ color: rgb(54, 100, 211);
/* oklch */ color: oklch(53.5% 0.179 264.2);

Tailwind

colors: {
  custom: {
    50: '#828fe1',
    500: '#3664d3',
    950: '#000000',
  },
}

SCSS

$custom: #3664d3;
$custom-light: #828fe1;
$custom-dark: #000000;

JSON

{
  "hex": "#3664d3",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 211
  },
  "hsl": {
    "h": 222.42,
    "s": 64.082,
    "l": 51.961
  },
  "oklch": {
    "l": 0.5347,
    "c": 0.17879,
    "h": 264.2
  },
  "luminance": 0.14602
}

Semantic roles & 50–950 ramp

primary

#3664D3

secondary

#D5C190

accent

#B641E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3664D3

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

Preview Lab → · Contrast checker → · Palette generator →