#3766BD#3766BD

#3766BD is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.4% C 0.146 H 261.5°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#3766BD
RGB	rgb(55, 102, 189)
HSL	hsl(219, 55%, 48%)
HSV	hsv(219, 71%, 74%)
CMYK	cmyk(70.9%, 46%, 0%, 25.9%)
CIE-LAB	lab(44.22, 13.68, -50.50)
CIE-LCH	lch(44.22, 52.32, 285.15°)
OKLab	oklab(52.35% -0.0217 -0.1446)
OKLCH	oklch(52.35% 0.146 261.5)
XYZ	xyz(15.5089, 13.9875, 50.0167)
Luminance	0.1399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766BD #BD8E37

analogous

#37A9BD #3766BD #4B37BD

triadic

#3766BD #BD3766 #66BD37

tetradic

#3766BD #BD37A9 #BD8E37 #37BD4B

square

#3766BD #BD37A9 #BD8E37 #37BD4B

split-complementary

#3766BD #BD4B37 #A9BD37

monochromatic

#1B335E #294C8E #3766BD #6088D1 #90ABDF

Accessibility & contrast

On white

5.53

#3766BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3766BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766BD

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766BD	#FFFFFF	#000000	##FFFFFF
##3766BD	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396FC0

Deuteranopia (green-blind)

#1D63BB

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3766bd;
/* rgb */ color: rgb(55, 102, 189);
/* oklch */ color: oklch(52.4% 0.146 261.5);

Tailwind

colors: {
  custom: {
    50: '#7e91d1',
    500: '#3766bd',
    950: '#000000',
  },
}

SCSS

$custom: #3766bd;
$custom-light: #7e91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3766bd",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 189
  },
  "hsl": {
    "h": 218.955,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.52354,
    "c": 0.14626,
    "h": 261.5
  },
  "luminance": 0.13989
}

Semantic roles & 50–950 ramp

primary

#3766BD

secondary

#C9B286

accent

#AA4ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3766BD

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

Preview Lab → · Contrast checker → · Palette generator →