#3763BB#3763BB

#3763BB is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.6% C 0.147 H 262.5°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#3763BB
RGB	rgb(55, 99, 187)
HSL	hsl(220, 55%, 47%)
HSV	hsv(220, 71%, 73%)
CMYK	cmyk(70.6%, 47.1%, 0%, 26.7%)
CIE-LAB	lab(43.24, 14.86, -50.89)
CIE-LCH	lch(43.24, 53.02, 286.28°)
OKLab	oklab(51.57% -0.0193 -0.1459)
OKLCH	oklch(51.57% 0.147 262.5)
XYZ	xyz(15.0038, 13.3222, 48.7848)
Luminance	0.1332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3763BB #BB8F37

analogous

#37A5BB #3763BB #4D37BB

triadic

#3763BB #BB3763 #63BB37

tetradic

#3763BB #BB37A5 #BB8F37 #37BB4D

square

#3763BB #BB37A5 #BB8F37 #37BB4D

split-complementary

#3763BB #BB4D37 #A5BB37

monochromatic

#1B315C #294A8C #3763BB #5F85D0 #8EA9DE

Accessibility & contrast

On white

5.73

#3763BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3763BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3763BB

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3763BB	#FFFFFF	#000000	##FFFFFF
##3763BB	1.00	5.73	3.66	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356DBE

Deuteranopia (green-blind)

#1660B9

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3763bb;
/* rgb */ color: rgb(55, 99, 187);
/* oklch */ color: oklch(51.6% 0.147 262.5);

Tailwind

colors: {
  custom: {
    50: '#7e8ed0',
    500: '#3763bb',
    950: '#000000',
  },
}

SCSS

$custom: #3763bb;
$custom-light: #7e8ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3763bb",
  "rgb": {
    "r": 55,
    "g": 99,
    "b": 187
  },
  "hsl": {
    "h": 220,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.51569,
    "c": 0.14713,
    "h": 262.5
  },
  "luminance": 0.13324
}

Semantic roles & 50–950 ramp

primary

#3763BB

secondary

#C9B285

accent

#AD4ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3763BB

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

Preview Lab → · Contrast checker → · Palette generator →