#3663C0#3663C0

#3663C0 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.9% C 0.154 H 262.8°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3663C0
RGB	rgb(54, 99, 192)
HSL	hsl(220, 56%, 48%)
HSV	hsv(220, 72%, 75%)
CMYK	cmyk(71.9%, 48.4%, 0%, 24.7%)
CIE-LAB	lab(43.52, 16.56, -53.35)
CIE-LCH	lch(43.52, 55.86, 287.25°)
OKLab	oklab(51.88% -0.0193 -0.1531)
OKLCH	oklch(51.88% 0.154 262.8)
XYZ	xyz(15.4942, 13.5121, 51.6505)
Luminance	0.1351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3663C0 #C09336

analogous

#36A8C0 #3663C0 #4E36C0

triadic

#3663C0 #C03663 #63C036

tetradic

#3663C0 #C036A8 #C09336 #36C04E

square

#3663C0 #C036A8 #C09336 #36C04E

split-complementary

#3663C0 #C04E36 #A8C036

monochromatic

#1B3260 #294A90 #3663C0 #6186D2 #90AAE0

Accessibility & contrast

On white

5.67

#3663C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#3663C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3663C0

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3663C0	#FFFFFF	#000000	##FFFFFF
##3663C0	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F6EC3

Deuteranopia (green-blind)

#0361BE

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3663c0;
/* rgb */ color: rgb(54, 99, 192);
/* oklch */ color: oklch(51.9% 0.154 262.8);

Tailwind

colors: {
  custom: {
    50: '#7e8ed4',
    500: '#3663c0',
    950: '#000000',
  },
}

SCSS

$custom: #3663c0;
$custom-light: #7e8ed4;
$custom-dark: #000000;

JSON

{
  "hex": "#3663c0",
  "rgb": {
    "r": 54,
    "g": 99,
    "b": 192
  },
  "hsl": {
    "h": 220.435,
    "s": 56.098,
    "l": 48.235
  },
  "oklch": {
    "l": 0.51875,
    "c": 0.15432,
    "h": 262.8
  },
  "luminance": 0.13514
}

Semantic roles & 50–950 ramp

primary

#3663C0

secondary

#CBB587

accent

#AE48DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3663C0

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

Preview Lab → · Contrast checker → · Palette generator →