#3773BD#3773BD

#3773BD is a mid, vivid cyan. Relative luminance 0.167; OKLCH L 55.2% C 0.131 H 255.1°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3773BD
RGB	rgb(55, 115, 189)
HSL	hsl(213, 55%, 48%)
HSV	hsv(213, 71%, 74%)
CMYK	cmyk(70.9%, 39.2%, 0%, 25.9%)
CIE-LAB	lab(47.94, 5.50, -44.55)
CIE-LCH	lch(47.94, 44.89, 277.03°)
OKLab	oklab(55.24% -0.0338 -0.127)
OKLCH	oklch(55.24% 0.131 255.1)
XYZ	xyz(16.8882, 16.7460, 50.4765)
Luminance	0.1675 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773BD #BD8137

analogous

#37B6BD #3773BD #3E37BD

triadic

#3773BD #BD3773 #73BD37

tetradic

#3773BD #BD37B6 #BD8137 #37BD3E

square

#3773BD #BD37B6 #BD8137 #37BD3E

split-complementary

#3773BD #BD3E37 #B6BD37

monochromatic

#1B395E #29568E #3773BD #6093D1 #90B3DF

Accessibility & contrast

On white

4.83

#3773BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3773BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773BD

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773BD	#FFFFFF	#000000	##FFFFFF
##3773BD	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5179C0

Deuteranopia (green-blind)

#3C6CBC

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3773bd;
/* rgb */ color: rgb(55, 115, 189);
/* oklch */ color: oklch(55.2% 0.131 255.1);

Tailwind

colors: {
  custom: {
    50: '#7e9ad1',
    500: '#3773bd',
    950: '#000000',
  },
}

SCSS

$custom: #3773bd;
$custom-light: #7e9ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#3773bd",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 189
  },
  "hsl": {
    "h": 213.134,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.55237,
    "c": 0.13138,
    "h": 255.1
  },
  "luminance": 0.16748
}

Semantic roles & 50–950 ramp

primary

#3773BD

secondary

#C9AB86

accent

#9C4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3773BD

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

Preview Lab → · Contrast checker → · Palette generator →