#3766CD#3766CD

#3766CD is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.5% C 0.168 H 263.4°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3766CD
RGB	rgb(55, 102, 205)
HSL	hsl(221, 60%, 51%)
HSV	hsv(221, 73%, 80%)
CMYK	cmyk(73.2%, 50.2%, 0%, 19.6%)
CIE-LAB	lab(45.25, 19.59, -58.07)
CIE-LCH	lch(45.25, 61.28, 288.64°)
OKLab	oklab(53.48% -0.0194 -0.1669)
OKLCH	oklch(53.48% 0.168 263.4)
XYZ	xyz(17.3424, 14.7209, 59.6732)
Luminance	0.1472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766CD #CD9E37

analogous

#37B1CD #3766CD #5337CD

triadic

#3766CD #CD3766 #66CD37

tetradic

#3766CD #CD37B1 #CD9E37 #37CD53

square

#3766CD #CD37B1 #CD9E37 #37CD53

split-complementary

#3766CD #CD5337 #B1CD37

monochromatic

#1C356E #284D9F #3766CD #688BD9 #99B1E5

Accessibility & contrast

On white

5.32

#3766CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#3766CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766CD

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766CD	#FFFFFF	#000000	##FFFFFF
##3766CD	1.00	5.32	3.94	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2772D1

Deuteranopia (green-blind)

#0065CB

Tritanopia (blue-blind)

#007F90

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3766cd;
/* rgb */ color: rgb(55, 102, 205);
/* oklch */ color: oklch(53.5% 0.168 263.4);

Tailwind

colors: {
  custom: {
    50: '#8191dd',
    500: '#3766cd',
    950: '#000000',
  },
}

SCSS

$custom: #3766cd;
$custom-light: #8191dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3766cd",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 205
  },
  "hsl": {
    "h": 221.2,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.53478,
    "c": 0.16804,
    "h": 263.4
  },
  "luminance": 0.14723
}

Semantic roles & 50–950 ramp

primary

#3766CD

secondary

#D1BC8F

accent

#B145E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3766CD

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

Preview Lab → · Contrast checker → · Palette generator →