#3761BB#3761BB

#3761BB is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.1% C 0.150 H 263.3°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3761BB
RGB	rgb(55, 97, 187)
HSL	hsl(221, 55%, 47%)
HSV	hsv(221, 71%, 73%)
CMYK	cmyk(70.6%, 48.1%, 0%, 26.7%)
CIE-LAB	lab(42.68, 16.15, -51.79)
CIE-LCH	lch(42.68, 54.25, 287.31°)
OKLab	oklab(51.14% -0.0175 -0.1485)
OKLCH	oklch(51.14% 0.15 263.3)
XYZ	xyz(14.8167, 12.9479, 48.7224)
Luminance	0.1295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3761BB #BB9137

analogous

#37A3BB #3761BB #4F37BB

triadic

#3761BB #BB3761 #61BB37

tetradic

#3761BB #BB37A3 #BB9137 #37BB4F

square

#3761BB #BB37A3 #BB9137 #37BB4F

split-complementary

#3761BB #BB4F37 #A3BB37

monochromatic

#1B305C #29488C #3761BB #5F83D0 #8EA8DE

Accessibility & contrast

On white

5.85

#3761BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3761BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3761BB

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3761BB	#FFFFFF	#000000	##FFFFFF
##3761BB	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306BBE

Deuteranopia (green-blind)

#0C5FB9

Tritanopia (blue-blind)

#007685

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3761bb;
/* rgb */ color: rgb(55, 97, 187);
/* oklch */ color: oklch(51.1% 0.150 263.3);

Tailwind

colors: {
  custom: {
    50: '#7e8dd0',
    500: '#3761bb',
    950: '#000000',
  },
}

SCSS

$custom: #3761bb;
$custom-light: #7e8dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3761bb",
  "rgb": {
    "r": 55,
    "g": 97,
    "b": 187
  },
  "hsl": {
    "h": 220.909,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.5114,
    "c": 0.14957,
    "h": 263.3
  },
  "luminance": 0.12949
}

Semantic roles & 50–950 ramp

primary

#3761BB

secondary

#C9B385

accent

#AF4ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3761BB

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

Preview Lab → · Contrast checker → · Palette generator →