#3773D7#3773D7

#3773D7 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 56.9% C 0.166 H 260.0°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3773D7
RGB	rgb(55, 115, 215)
HSL	hsl(218, 67%, 53%)
HSV	hsv(218, 74%, 84%)
CMYK	cmyk(74.4%, 46.5%, 0%, 15.7%)
CIE-LAB	lab(49.47, 15.04, -56.98)
CIE-LCH	lch(49.47, 58.93, 284.79°)
OKLab	oklab(56.92% -0.0287 -0.1635)
OKLCH	oklch(56.92% 0.166 260)
XYZ	xyz(19.9676, 17.9777, 66.6945)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773D7 #D79B37

analogous

#37C3D7 #3773D7 #4B37D7

triadic

#3773D7 #D73773 #73D737

tetradic

#3773D7 #D737C3 #D79B37 #37D74B

square

#3773D7 #D737C3 #D79B37 #37D74B

split-complementary

#3773D7 #D74B37 #C3D737

monochromatic

#193D7B #2357AE #3773D7 #6A97E1 #9DBAEB

Accessibility & contrast

On white

4.57

#3773D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#3773D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3773D7

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773D7	#FFFFFF	#000000	##000000
##3773D7	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7DDB

Deuteranopia (green-blind)

#136FD5

Tritanopia (blue-blind)

#008B9A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3773d7;
/* rgb */ color: rgb(55, 115, 215);
/* oklch */ color: oklch(56.9% 0.166 260.0);

Tailwind

colors: {
  custom: {
    50: '#839ae4',
    500: '#3773d7',
    950: '#000000',
  },
}

SCSS

$custom: #3773d7;
$custom-light: #839ae4;
$custom-dark: #000000;

JSON

{
  "hex": "#3773d7",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 215
  },
  "hsl": {
    "h": 217.5,
    "s": 66.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.56916,
    "c": 0.16597,
    "h": 260
  },
  "luminance": 0.1798
}

Semantic roles & 50–950 ramp

primary

#3773D7

secondary

#D7BE92

accent

#A93EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3773D7

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

Preview Lab → · Contrast checker → · Palette generator →