#3660CD#3660CD

#3660CD is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.2% C 0.176 H 265.0°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#3660CD
RGB	rgb(54, 96, 205)
HSL	hsl(223, 60%, 51%)
HSV	hsv(223, 74%, 80%)
CMYK	cmyk(73.7%, 53.2%, 0%, 19.6%)
CIE-LAB	lab(43.59, 23.31, -60.75)
CIE-LCH	lch(43.59, 65.07, 290.99°)
OKLab	oklab(52.21% -0.0154 -0.1749)
OKLCH	oklch(52.21% 0.176 265)
XYZ	xyz(16.7197, 13.5560, 59.4812)
Luminance	0.1356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660CD #CDA336

analogous

#36ABCD #3660CD #5736CD

triadic

#3660CD #CD3660 #60CD36

tetradic

#3660CD #CD36AB #CDA336 #36CD57

square

#3660CD #CD36AB #CDA336 #36CD57

split-complementary

#3660CD #CD5736 #ABCD36

monochromatic

#1B326D #27499E #3660CD #6787D9 #98AEE5

Accessibility & contrast

On white

5.66

#3660CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3660CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660CD

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660CD	#FFFFFF	#000000	##FFFFFF
##3660CD	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C6ED1

Deuteranopia (green-blind)

#0060CB

Tritanopia (blue-blind)

#007A8D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3660cd;
/* rgb */ color: rgb(54, 96, 205);
/* oklch */ color: oklch(52.2% 0.176 265.0);

Tailwind

colors: {
  custom: {
    50: '#818cdd',
    500: '#3660cd',
    950: '#000000',
  },
}

SCSS

$custom: #3660cd;
$custom-light: #818cdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3660cd",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 205
  },
  "hsl": {
    "h": 223.311,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52206,
    "c": 0.17562,
    "h": 265
  },
  "luminance": 0.13558
}

Semantic roles & 50–950 ramp

primary

#3660CD

secondary

#D1BE8E

accent

#B744E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3660CD

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

Preview Lab → · Contrast checker → · Palette generator →