#3664C6#3664C6

#3664C6 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.5% C 0.161 H 263.1°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#3664C6
RGB	rgb(54, 100, 198)
HSL	hsl(221, 57%, 49%)
HSV	hsv(221, 73%, 78%)
CMYK	cmyk(72.7%, 49.5%, 0%, 22.4%)
CIE-LAB	lab(44.20, 18.14, -55.74)
CIE-LCH	lch(44.20, 58.62, 288.03°)
OKLab	oklab(52.51% -0.0194 -0.1601)
OKLCH	oklch(52.51% 0.161 263.1)
XYZ	xyz(16.2679, 13.9741, 55.2550)
Luminance	0.1398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664C6 #C69836

analogous

#36ACC6 #3664C6 #5036C6

triadic

#3664C6 #C63664 #64C636

tetradic

#3664C6 #C636AC #C69836 #36C650

square

#3664C6 #C636AC #C69836 #36C650

split-complementary

#3664C6 #C65036 #ACC636

monochromatic

#1C3366 #294C96 #3664C6 #6488D5 #94ADE2

Accessibility & contrast

On white

5.53

#3664C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3664C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664C6

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664C6	#FFFFFF	#000000	##FFFFFF
##3664C6	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B6FCA

Deuteranopia (green-blind)

#0062C4

Tritanopia (blue-blind)

#007B8B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3664c6;
/* rgb */ color: rgb(54, 100, 198);
/* oklch */ color: oklch(52.5% 0.161 263.1);

Tailwind

colors: {
  custom: {
    50: '#808fd8',
    500: '#3664c6',
    950: '#000000',
  },
}

SCSS

$custom: #3664c6;
$custom-light: #808fd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3664c6",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 198
  },
  "hsl": {
    "h": 220.833,
    "s": 57.143,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52514,
    "c": 0.16129,
    "h": 263.1
  },
  "luminance": 0.13976
}

Semantic roles & 50–950 ramp

primary

#3664C6

secondary

#CDB88B

accent

#B047E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3664C6

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

Preview Lab → · Contrast checker → · Palette generator →