#3773BF#3773BF

#3773BF is a mid, vivid cyan. Relative luminance 0.168; OKLCH L 55.4% C 0.134 H 255.6°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3773BF
RGB	rgb(55, 115, 191)
HSL	hsl(214, 55%, 48%)
HSV	hsv(214, 71%, 75%)
CMYK	cmyk(71.2%, 39.8%, 0%, 25.1%)
CIE-LAB	lab(48.05, 6.23, -45.53)
CIE-LCH	lch(48.05, 45.95, 277.79°)
OKLab	oklab(55.36% -0.0333 -0.1298)
OKLCH	oklch(55.36% 0.134 255.6)
XYZ	xyz(17.1068, 16.8334, 51.6277)
Luminance	0.1683 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773BF #BF8337

analogous

#37B7BF #3773BF #3F37BF

triadic

#3773BF #BF3773 #73BF37

tetradic

#3773BF #BF37B7 #BF8337 #37BF3F

square

#3773BF #BF37B7 #BF8337 #37BF3F

split-complementary

#3773BF #BF3F37 #B7BF37

monochromatic

#1C3A60 #29568F #3773BF #6293D2 #91B4DF

Accessibility & contrast

On white

4.81

#3773BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3773BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773BF

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773BF	#FFFFFF	#000000	##FFFFFF
##3773BF	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5079C2

Deuteranopia (green-blind)

#3A6CBD

Tritanopia (blue-blind)

#008590

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3773bf;
/* rgb */ color: rgb(55, 115, 191);
/* oklch */ color: oklch(55.4% 0.134 255.6);

Tailwind

colors: {
  custom: {
    50: '#7e9ad3',
    500: '#3773bf',
    950: '#000000',
  },
}

SCSS

$custom: #3773bf;
$custom-light: #7e9ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3773bf",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 191
  },
  "hsl": {
    "h": 213.529,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.55359,
    "c": 0.13404,
    "h": 255.6
  },
  "luminance": 0.16835
}

Semantic roles & 50–950 ramp

primary

#3773BF

secondary

#CAAD88

accent

#9D49DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3773BF

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

Preview Lab → · Contrast checker → · Palette generator →