#3764BB#3764BB

#3764BB is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.8% C 0.146 H 262.0°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3764BB
RGB	rgb(55, 100, 187)
HSL	hsl(220, 55%, 47%)
HSV	hsv(220, 71%, 73%)
CMYK	cmyk(70.6%, 46.5%, 0%, 26.7%)
CIE-LAB	lab(43.53, 14.22, -50.44)
CIE-LCH	lch(43.53, 52.41, 285.74°)
OKLab	oklab(51.79% -0.0202 -0.1445)
OKLCH	oklch(51.79% 0.146 262)
XYZ	xyz(15.0992, 13.5129, 48.8166)
Luminance	0.1351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3764BB #BB8E37

analogous

#37A6BB #3764BB #4C37BB

triadic

#3764BB #BB3764 #64BB37

tetradic

#3764BB #BB37A6 #BB8E37 #37BB4C

square

#3764BB #BB37A6 #BB8E37 #37BB4C

split-complementary

#3764BB #BB4C37 #A6BB37

monochromatic

#1B315C #294B8C #3764BB #5F86D0 #8EAADE

Accessibility & contrast

On white

5.67

#3764BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#3764BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3764BB

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3764BB	#FFFFFF	#000000	##FFFFFF
##3764BB	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376DBE

Deuteranopia (green-blind)

#1A61B9

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3764bb;
/* rgb */ color: rgb(55, 100, 187);
/* oklch */ color: oklch(51.8% 0.146 262.0);

Tailwind

colors: {
  custom: {
    50: '#7e8fd0',
    500: '#3764bb',
    950: '#000000',
  },
}

SCSS

$custom: #3764bb;
$custom-light: #7e8fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3764bb",
  "rgb": {
    "r": 55,
    "g": 100,
    "b": 187
  },
  "hsl": {
    "h": 219.545,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.51785,
    "c": 0.14592,
    "h": 262
  },
  "luminance": 0.13514
}

Semantic roles & 50–950 ramp

primary

#3764BB

secondary

#C9B285

accent

#AB4ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3764BB

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

Preview Lab → · Contrast checker → · Palette generator →