#3660C5#3660C5

#3660C5 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.6% C 0.165 H 264.4°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3660C5
RGB	rgb(54, 96, 197)
HSL	hsl(222, 57%, 49%)
HSV	hsv(222, 73%, 77%)
CMYK	cmyk(72.6%, 51.3%, 0%, 22.7%)
CIE-LAB	lab(43.03, 20.35, -57.04)
CIE-LCH	lch(43.03, 60.56, 289.63°)
OKLab	oklab(51.61% -0.0162 -0.164)
OKLCH	oklch(51.61% 0.165 264.4)
XYZ	xyz(15.7787, 13.1795, 54.5248)
Luminance	0.1318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660C5 #C59B36

analogous

#36A8C5 #3660C5 #5436C5

triadic

#3660C5 #C53660 #60C536

tetradic

#3660C5 #C536A8 #C59B36 #36C554

square

#3660C5 #C536A8 #C59B36 #36C554

split-complementary

#3660C5 #C55436 #A8C536

monochromatic

#1C3165 #294995 #3660C5 #6485D4 #94ABE2

Accessibility & contrast

On white

5.78

#3660C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3660C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660C5

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660C5	#FFFFFF	#000000	##FFFFFF
##3660C5	1.00	5.78	3.64	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#206DC9

Deuteranopia (green-blind)

#005FC3

Tritanopia (blue-blind)

#007889

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3660c5;
/* rgb */ color: rgb(54, 96, 197);
/* oklch */ color: oklch(51.6% 0.165 264.4);

Tailwind

colors: {
  custom: {
    50: '#7f8cd7',
    500: '#3660c5',
    950: '#000000',
  },
}

SCSS

$custom: #3660c5;
$custom-light: #7f8cd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3660c5",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 197
  },
  "hsl": {
    "h": 222.378,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.51606,
    "c": 0.16481,
    "h": 264.4
  },
  "luminance": 0.13181
}

Semantic roles & 50–950 ramp

primary

#3660C5

secondary

#CDB98A

accent

#B348E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3660C5

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

Preview Lab → · Contrast checker → · Palette generator →