#3660D1#3660D1

#3660D1 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.5% C 0.181 H 265.2°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3660D1
RGB	rgb(54, 96, 209)
HSL	hsl(224, 63%, 52%)
HSV	hsv(224, 74%, 82%)
CMYK	cmyk(74.2%, 54.1%, 0%, 18%)
CIE-LAB	lab(43.87, 24.78, -62.59)
CIE-LCH	lch(43.87, 67.32, 291.60°)
OKLab	oklab(52.51% -0.0151 -0.1803)
OKLCH	oklch(52.51% 0.181 265.2)
XYZ	xyz(17.2088, 13.7516, 62.0566)
Luminance	0.1375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660D1 #D1A736

analogous

#36AED1 #3660D1 #5A36D1

triadic

#3660D1 #D13660 #60D136

tetradic

#3660D1 #D136AE #D1A736 #36D15A

square

#3660D1 #D136AE #D1A736 #36D15A

split-complementary

#3660D1 #D15A36 #AED136

monochromatic

#1A3272 #2648A4 #3660D1 #6887DC #9AAFE8

Accessibility & contrast

On white

5.60

#3660D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3660D1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660D1

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660D1	#FFFFFF	#000000	##FFFFFF
##3660D1	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006FD5

Deuteranopia (green-blind)

#0061CF

Tritanopia (blue-blind)

#007C8F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3660d1;
/* rgb */ color: rgb(54, 96, 209);
/* oklch */ color: oklch(52.5% 0.181 265.2);

Tailwind

colors: {
  custom: {
    50: '#828ce0',
    500: '#3660d1',
    950: '#000000',
  },
}

SCSS

$custom: #3660d1;
$custom-light: #828ce0;
$custom-dark: #000000;

JSON

{
  "hex": "#3660d1",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 209
  },
  "hsl": {
    "h": 223.742,
    "s": 62.753,
    "l": 51.569
  },
  "oklch": {
    "l": 0.52512,
    "c": 0.18097,
    "h": 265.2
  },
  "luminance": 0.13753
}

Semantic roles & 50–950 ramp

primary

#3660D1

secondary

#D3C18F

accent

#B942E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3660D1

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

Preview Lab → · Contrast checker → · Palette generator →