#3664BD#3664BD

#3664BD is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.9% C 0.149 H 262.0°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#3664BD
RGB	rgb(54, 100, 189)
HSL	hsl(220, 56%, 48%)
HSV	hsv(220, 71%, 74%)
CMYK	cmyk(71.4%, 47.1%, 0%, 25.9%)
CIE-LAB	lab(43.61, 14.81, -51.47)
CIE-LCH	lch(43.61, 53.56, 286.05°)
OKLab	oklab(51.88% -0.0207 -0.1475)
OKLCH	oklch(51.88% 0.149 262)
XYZ	xyz(15.2605, 13.5711, 49.9495)
Luminance	0.1357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664BD #BD8F36

analogous

#36A7BD #3664BD #4C36BD

triadic

#3664BD #BD3664 #64BD36

tetradic

#3664BD #BD36A7 #BD8F36 #36BD4C

square

#3664BD #BD36A7 #BD8F36 #36BD4C

split-complementary

#3664BD #BD4C36 #A7BD36

monochromatic

#1B325E #284B8D #3664BD #5F86D1 #8FAADF

Accessibility & contrast

On white

5.65

#3664BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3664BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664BD

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664BD	#FFFFFF	#000000	##FFFFFF
##3664BD	1.00	5.65	3.71	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356EC0

Deuteranopia (green-blind)

#1461BB

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3664bd;
/* rgb */ color: rgb(54, 100, 189);
/* oklch */ color: oklch(51.9% 0.149 262.0);

Tailwind

colors: {
  custom: {
    50: '#7e8fd1',
    500: '#3664bd',
    950: '#000000',
  },
}

SCSS

$custom: #3664bd;
$custom-light: #7e8fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3664bd",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 189
  },
  "hsl": {
    "h": 219.556,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.5188,
    "c": 0.14899,
    "h": 262
  },
  "luminance": 0.13573
}

Semantic roles & 50–950 ramp

primary

#3664BD

secondary

#C9B285

accent

#AC49DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3664BD

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

Preview Lab → · Contrast checker → · Palette generator →