#3664DB#3664DB

#3664DB is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.1% C 0.189 H 264.8°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3664DB
RGB	rgb(54, 100, 219)
HSL	hsl(223, 70%, 54%)
HSV	hsv(223, 75%, 86%)
CMYK	cmyk(75.3%, 54.3%, 0%, 14.1%)
CIE-LAB	lab(45.65, 25.91, -65.42)
CIE-LCH	lch(45.65, 70.36, 291.60°)
OKLab	oklab(54.08% -0.0173 -0.1886)
OKLCH	oklch(54.08% 0.189 264.8)
XYZ	xyz(18.8602, 15.0110, 68.9075)
Luminance	0.1501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664DB #DBAD36

analogous

#36B6DB #3664DB #5A36DB

triadic

#3664DB #DB3664 #64DB36

tetradic

#3664DB #DB36B6 #DBAD36 #36DB5A

square

#3664DB #DB36B6 #DBAD36 #36DB5A

split-complementary

#3664DB #DB5A36 #B6DB36

monochromatic

#173480 #2049B4 #3664DB #6A8CE4 #9EB4EE

Accessibility & contrast

On white

5.25

#3664DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#3664DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664DB

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664DB	#FFFFFF	#000000	##FFFFFF
##3664DB	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074DF

Deuteranopia (green-blind)

#0065D9

Tritanopia (blue-blind)

#008196

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3664db;
/* rgb */ color: rgb(54, 100, 219);
/* oklch */ color: oklch(54.1% 0.189 264.8);

Tailwind

colors: {
  custom: {
    50: '#848fe7',
    500: '#3664db',
    950: '#000000',
  },
}

SCSS

$custom: #3664db;
$custom-light: #848fe7;
$custom-dark: #000000;

JSON

{
  "hex": "#3664db",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 219
  },
  "hsl": {
    "h": 223.273,
    "s": 69.62,
    "l": 53.529
  },
  "oklch": {
    "l": 0.54079,
    "c": 0.18939,
    "h": 264.8
  },
  "luminance": 0.15013
}

Semantic roles & 50–950 ramp

primary

#3664DB

secondary

#DAC693

accent

#BB3BEC

background

#F8F8FE

surface

#F0F0FD

border

#CBCBD5

text

#0D0C16

muted

#7D7D84

Preview Lab

Preview with #3664DB

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

Preview Lab → · Contrast checker → · Palette generator →