#3766C8#3766C8

#3766C8 is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.1% C 0.161 H 262.9°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#3766C8
RGB	rgb(55, 102, 200)
HSL	hsl(221, 57%, 50%)
HSV	hsv(221, 73%, 78%)
CMYK	cmyk(72.5%, 49%, 0%, 21.6%)
CIE-LAB	lab(44.92, 17.74, -55.73)
CIE-LCH	lch(44.92, 58.48, 287.66°)
OKLab	oklab(53.12% -0.02 -0.16)
OKLCH	oklch(53.12% 0.161 262.9)
XYZ	xyz(16.7485, 14.4833, 56.5453)
Luminance	0.1449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766C8 #C89937

analogous

#37AEC8 #3766C8 #5137C8

triadic

#3766C8 #C83766 #66C837

tetradic

#3766C8 #C837AE #C89937 #37C851

square

#3766C8 #C837AE #C89937 #37C851

split-complementary

#3766C8 #C85137 #AEC837

monochromatic

#1D3568 #2A4E98 #3766C8 #678BD5 #97AFE2

Accessibility & contrast

On white

5.39

#3766C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#3766C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766C8

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766C8	#FFFFFF	#000000	##FFFFFF
##3766C8	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E71CC

Deuteranopia (green-blind)

#0064C6

Tritanopia (blue-blind)

#007D8D

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3766c8;
/* rgb */ color: rgb(55, 102, 200);
/* oklch */ color: oklch(53.1% 0.161 262.9);

Tailwind

colors: {
  custom: {
    50: '#8091d9',
    500: '#3766c8',
    950: '#000000',
  },
}

SCSS

$custom: #3766c8;
$custom-light: #8091d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3766c8",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 200
  },
  "hsl": {
    "h": 220.552,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.53119,
    "c": 0.16128,
    "h": 262.9
  },
  "luminance": 0.14485
}

Semantic roles & 50–950 ramp

primary

#3766C8

secondary

#CEB98D

accent

#AF48E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3766C8

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

Preview Lab → · Contrast checker → · Palette generator →