#3660C4#3660C4

#3660C4 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.5% C 0.163 H 264.3°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#3660C4
RGB	rgb(54, 96, 196)
HSL	hsl(222, 57%, 49%)
HSV	hsv(222, 72%, 77%)
CMYK	cmyk(72.4%, 51%, 0%, 23.1%)
CIE-LAB	lab(42.96, 19.98, -56.57)
CIE-LCH	lch(42.96, 60.00, 289.45°)
OKLab	oklab(51.53% -0.0163 -0.1626)
OKLCH	oklch(51.53% 0.163 264.3)
XYZ	xyz(15.6645, 13.1339, 53.9234)
Luminance	0.1314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660C4 #C49A36

analogous

#36A7C4 #3660C4 #5336C4

triadic

#3660C4 #C43660 #60C436

tetradic

#3660C4 #C436A7 #C49A36 #36C453

square

#3660C4 #C436A7 #C49A36 #36C453

split-complementary

#3660C4 #C45336 #A7C436

monochromatic

#1C3164 #294894 #3660C4 #6385D4 #93AAE1

Accessibility & contrast

On white

5.79

#3660C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#3660C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660C4

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660C4	#FFFFFF	#000000	##FFFFFF
##3660C4	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#226CC8

Deuteranopia (green-blind)

#005FC2

Tritanopia (blue-blind)

#007889

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3660c4;
/* rgb */ color: rgb(54, 96, 196);
/* oklch */ color: oklch(51.5% 0.163 264.3);

Tailwind

colors: {
  custom: {
    50: '#7f8cd6',
    500: '#3660c4',
    950: '#000000',
  },
}

SCSS

$custom: #3660c4;
$custom-light: #7f8cd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3660c4",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 196
  },
  "hsl": {
    "h": 222.254,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.51533,
    "c": 0.16345,
    "h": 264.3
  },
  "luminance": 0.13136
}

Semantic roles & 50–950 ramp

primary

#3660C4

secondary

#CCB989

accent

#B348E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3660C4

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

Preview Lab → · Contrast checker → · Palette generator →