#3664C5#3664C5

#3664C5 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.4% C 0.160 H 263.0°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#3664C5
RGB	rgb(54, 100, 197)
HSL	hsl(221, 57%, 49%)
HSV	hsv(221, 73%, 77%)
CMYK	cmyk(72.6%, 49.2%, 0%, 22.7%)
CIE-LAB	lab(44.13, 17.77, -55.27)
CIE-LCH	lch(44.13, 58.06, 287.83°)
OKLab	oklab(52.44% -0.0195 -0.1587)
OKLCH	oklch(52.44% 0.16 263)
XYZ	xyz(16.1530, 13.9281, 54.6496)
Luminance	0.1393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664C5 #C59736

analogous

#36ACC5 #3664C5 #4F36C5

triadic

#3664C5 #C53664 #64C536

tetradic

#3664C5 #C536AC #C59736 #36C54F

square

#3664C5 #C536AC #C59736 #36C54F

split-complementary

#3664C5 #C54F36 #ACC536

monochromatic

#1C3365 #294C95 #3664C5 #6488D4 #94ADE2

Accessibility & contrast

On white

5.55

#3664C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3664C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664C5

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664C5	#FFFFFF	#000000	##FFFFFF
##3664C5	1.00	5.55	3.79	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C6FC9

Deuteranopia (green-blind)

#0062C3

Tritanopia (blue-blind)

#007B8B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3664c5;
/* rgb */ color: rgb(54, 100, 197);
/* oklch */ color: oklch(52.4% 0.160 263.0);

Tailwind

colors: {
  custom: {
    50: '#7f8fd7',
    500: '#3664c5',
    950: '#000000',
  },
}

SCSS

$custom: #3664c5;
$custom-light: #7f8fd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3664c5",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 197
  },
  "hsl": {
    "h": 220.699,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.52443,
    "c": 0.15994,
    "h": 263
  },
  "luminance": 0.1393
}

Semantic roles & 50–950 ramp

primary

#3664C5

secondary

#CDB78A

accent

#AF48E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3664C5

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

Preview Lab → · Contrast checker → · Palette generator →