#3773CD#3773CD

#3773CD is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.2% C 0.153 H 258.5°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3773CD
RGB	rgb(55, 115, 205)
HSL	hsl(216, 60%, 51%)
HSV	hsv(216, 73%, 80%)
CMYK	cmyk(73.2%, 43.9%, 0%, 19.6%)
CIE-LAB	lab(48.86, 11.36, -52.26)
CIE-LCH	lch(48.86, 53.48, 282.26°)
OKLab	oklab(56.25% -0.0304 -0.1496)
OKLCH	oklch(56.25% 0.153 258.5)
XYZ	xyz(18.7217, 17.4794, 60.1329)
Luminance	0.1748 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773CD #CD9137

analogous

#37BECD #3773CD #4637CD

triadic

#3773CD #CD3773 #73CD37

tetradic

#3773CD #CD37BE #CD9137 #37CD46

square

#3773CD #CD37BE #CD9137 #37CD46

split-complementary

#3773CD #CD4637 #BECD37

monochromatic

#1C3D6E #28579F #3773CD #6895D9 #99B8E5

Accessibility & contrast

On white

4.67

#3773CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3773CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3773CD

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773CD	#FFFFFF	#000000	##FFFFFF
##3773CD	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#467BD0

Deuteranopia (green-blind)

#296ECB

Tritanopia (blue-blind)

#008896

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3773cd;
/* rgb */ color: rgb(55, 115, 205);
/* oklch */ color: oklch(56.2% 0.153 258.5);

Tailwind

colors: {
  custom: {
    50: '#819add',
    500: '#3773cd',
    950: '#000000',
  },
}

SCSS

$custom: #3773cd;
$custom-light: #819add;
$custom-dark: #000000;

JSON

{
  "hex": "#3773cd",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 205
  },
  "hsl": {
    "h": 216,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56249,
    "c": 0.15267,
    "h": 258.5
  },
  "luminance": 0.17481
}

Semantic roles & 50–950 ramp

primary

#3773CD

secondary

#D1B78F

accent

#A445E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3773CD

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

Preview Lab → · Contrast checker → · Palette generator →