#3766D4#3766D4

#3766D4 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.0% C 0.177 H 264.0°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3766D4
RGB	rgb(55, 102, 212)
HSL	hsl(222, 65%, 52%)
HSV	hsv(222, 74%, 83%)
CMYK	cmyk(74.1%, 51.9%, 0%, 16.9%)
CIE-LAB	lab(45.73, 22.17, -61.31)
CIE-LCH	lch(45.73, 65.19, 289.88°)
OKLab	oklab(53.99% -0.0186 -0.1764)
OKLCH	oklch(53.99% 0.177 264)
XYZ	xyz(18.2064, 15.0664, 64.2232)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766D4 #D4A537

analogous

#37B5D4 #3766D4 #5637D4

triadic

#3766D4 #D43766 #66D437

tetradic

#3766D4 #D437B5 #D4A537 #37D456

square

#3766D4 #D437B5 #D4A537 #37D456

split-complementary

#3766D4 #D45637 #B5D437

monochromatic

#1A3677 #244CA9 #3766D4 #698DDF #9CB3EA

Accessibility & contrast

On white

5.23

#3766D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#3766D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766D4

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766D4	#FFFFFF	#000000	##FFFFFF
##3766D4	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B74D8

Deuteranopia (green-blind)

#0065D2

Tritanopia (blue-blind)

#008193

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3766d4;
/* rgb */ color: rgb(55, 102, 212);
/* oklch */ color: oklch(54.0% 0.177 264.0);

Tailwind

colors: {
  custom: {
    50: '#8391e2',
    500: '#3766d4',
    950: '#000000',
  },
}

SCSS

$custom: #3766d4;
$custom-light: #8391e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3766d4",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 212
  },
  "hsl": {
    "h": 222.038,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.53991,
    "c": 0.17743,
    "h": 264
  },
  "luminance": 0.15068
}

Semantic roles & 50–950 ramp

primary

#3766D4

secondary

#D6C191

accent

#B540E8

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3766D4

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

Preview Lab → · Contrast checker → · Palette generator →