#3664BA#3664BA

#3664BA is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.7% C 0.145 H 261.6°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3664BA
RGB	rgb(54, 100, 186)
HSL	hsl(219, 55%, 47%)
HSV	hsv(219, 71%, 73%)
CMYK	cmyk(71%, 46.2%, 0%, 27.1%)
CIE-LAB	lab(43.42, 13.70, -50.03)
CIE-LCH	lch(43.42, 51.87, 285.32°)
OKLab	oklab(51.67% -0.0212 -0.1433)
OKLCH	oklch(51.67% 0.145 261.6)
XYZ	xyz(14.9383, 13.4422, 48.2522)
Luminance	0.1344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3664BA #BA8C36

analogous

#36A6BA #3664BA #4A36BA

triadic

#3664BA #BA3664 #64BA36

tetradic

#3664BA #BA36A6 #BA8C36 #36BA4A

square

#3664BA #BA36A6 #BA8C36 #36BA4A

split-complementary

#3664BA #BA4A36 #A6BA36

monochromatic

#1A315B #284B8B #3664BA #5D85D0 #8DA9DE

Accessibility & contrast

On white

5.69

#3664BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3664BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3664BA

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3664BA	#FFFFFF	#000000	##FFFFFF
##3664BA	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386DBD

Deuteranopia (green-blind)

#1C61B8

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3664ba;
/* rgb */ color: rgb(54, 100, 186);
/* oklch */ color: oklch(51.7% 0.145 261.6);

Tailwind

colors: {
  custom: {
    50: '#7d8fcf',
    500: '#3664ba',
    950: '#000000',
  },
}

SCSS

$custom: #3664ba;
$custom-light: #7d8fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3664ba",
  "rgb": {
    "r": 54,
    "g": 100,
    "b": 186
  },
  "hsl": {
    "h": 219.091,
    "s": 55,
    "l": 47.059
  },
  "oklch": {
    "l": 0.51673,
    "c": 0.14487,
    "h": 261.6
  },
  "luminance": 0.13444
}

Semantic roles & 50–950 ramp

primary

#3664BA

secondary

#C8B084

accent

#AA49DE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3664BA

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

Preview Lab → · Contrast checker → · Palette generator →