#3764CB#3764CB

#3764CB is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.9% C 0.168 H 263.8°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3764CB
RGB	rgb(55, 100, 203)
HSL	hsl(222, 59%, 51%)
HSV	hsv(222, 73%, 80%)
CMYK	cmyk(72.9%, 50.7%, 0%, 20.4%)
CIE-LAB	lab(44.57, 20.13, -58.02)
CIE-LCH	lch(44.57, 61.41, 289.13°)
OKLab	oklab(52.92% -0.018 -0.1668)
OKLCH	oklch(52.92% 0.168 263.8)
XYZ	xyz(16.9084, 14.2365, 58.3451)
Luminance	0.1424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3764CB #CB9E37

analogous

#37AECB #3764CB #5437CB

triadic

#3764CB #CB3764 #64CB37

tetradic

#3764CB #CB37AE #CB9E37 #37CB54

square

#3764CB #CB37AE #CB9E37 #37CB54

split-complementary

#3764CB #CB5437 #AECB37

monochromatic

#1C346C #294C9C #3764CB #688AD8 #98AFE4

Accessibility & contrast

On white

5.46

#3764CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#3764CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3764CB

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3764CB	#FFFFFF	#000000	##FFFFFF
##3764CB	1.00	5.46	3.85	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2471CF

Deuteranopia (green-blind)

#0063C9

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3764cb;
/* rgb */ color: rgb(55, 100, 203);
/* oklch */ color: oklch(52.9% 0.168 263.8);

Tailwind

colors: {
  custom: {
    50: '#818fdb',
    500: '#3764cb',
    950: '#000000',
  },
}

SCSS

$custom: #3764cb;
$custom-light: #818fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3764cb",
  "rgb": {
    "r": 55,
    "g": 100,
    "b": 203
  },
  "hsl": {
    "h": 221.757,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.52918,
    "c": 0.16777,
    "h": 263.8
  },
  "luminance": 0.14238
}

Semantic roles & 50–950 ramp

primary

#3764CB

secondary

#D0BC8E

accent

#B246E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3764CB

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

Preview Lab → · Contrast checker → · Palette generator →