#3764CC#3764CC

#3764CC is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.0% C 0.169 H 263.9°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3764CC
RGB	rgb(55, 100, 204)
HSL	hsl(222, 59%, 51%)
HSV	hsv(222, 73%, 80%)
CMYK	cmyk(73%, 51%, 0%, 20%)
CIE-LAB	lab(44.64, 20.50, -58.48)
CIE-LCH	lch(44.64, 61.97, 289.31°)
OKLab	oklab(52.99% -0.0179 -0.1682)
OKLCH	oklch(52.99% 0.169 263.9)
XYZ	xyz(17.0279, 14.2844, 58.9748)
Luminance	0.1429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3764CC #CC9F37

analogous

#37AFCC #3764CC #5437CC

triadic

#3764CC #CC3764 #64CC37

tetradic

#3764CC #CC37AF #CC9F37 #37CC54

square

#3764CC #CC37AF #CC9F37 #37CC54

split-complementary

#3764CC #CC5437 #AFCC37

monochromatic

#1C346D #284C9E #3764CC #688AD8 #99B0E5

Accessibility & contrast

On white

5.44

#3764CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3764CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3764CC

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3764CC	#FFFFFF	#000000	##FFFFFF
##3764CC	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2271D0

Deuteranopia (green-blind)

#0063CA

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3764cc;
/* rgb */ color: rgb(55, 100, 204);
/* oklch */ color: oklch(53.0% 0.169 263.9);

Tailwind

colors: {
  custom: {
    50: '#818fdc',
    500: '#3764cc',
    950: '#000000',
  },
}

SCSS

$custom: #3764cc;
$custom-light: #818fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3764cc",
  "rgb": {
    "r": 55,
    "g": 100,
    "b": 204
  },
  "hsl": {
    "h": 221.879,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52991,
    "c": 0.16912,
    "h": 263.9
  },
  "luminance": 0.14286
}

Semantic roles & 50–950 ramp

primary

#3764CC

secondary

#D0BC8E

accent

#B345E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3764CC

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

Preview Lab → · Contrast checker → · Palette generator →