#3773B9#3773B9

#3773B9 is a mid, vivid cyan. Relative luminance 0.166; OKLCH L 55.0% C 0.126 H 254.0°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3773B9
RGB	rgb(55, 115, 185)
HSL	hsl(212, 54%, 47%)
HSV	hsv(212, 70%, 73%)
CMYK	cmyk(70.3%, 37.8%, 0%, 27.5%)
CIE-LAB	lab(47.72, 4.04, -42.59)
CIE-LCH	lch(47.72, 42.78, 275.43°)
OKLab	oklab(55% -0.0348 -0.1212)
OKLCH	oklch(55% 0.126 254)
XYZ	xyz(16.4600, 16.5747, 48.2213)
Luminance	0.1658 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773B9 #B97D37

analogous

#37B4B9 #3773B9 #3C37B9

triadic

#3773B9 #B93773 #73B937

tetradic

#3773B9 #B937B4 #B97D37 #37B93C

square

#3773B9 #B937B4 #B97D37 #37B93C

split-complementary

#3773B9 #B93C37 #B4B937

monochromatic

#1B385B #29568A #3773B9 #5E92CF #8DB2DD

Accessibility & contrast

On white

4.87

#3773B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3773B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773B9

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773B9	#FFFFFF	#000000	##FFFFFF
##3773B9	1.00	4.87	4.32	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5378BC

Deuteranopia (green-blind)

#406CB8

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3773b9;
/* rgb */ color: rgb(55, 115, 185);
/* oklch */ color: oklch(55.0% 0.126 254.0);

Tailwind

colors: {
  custom: {
    50: '#7d9ace',
    500: '#3773b9',
    950: '#000000',
  },
}

SCSS

$custom: #3773b9;
$custom-light: #7d9ace;
$custom-dark: #000000;

JSON

{
  "hex": "#3773b9",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 185
  },
  "hsl": {
    "h": 212.308,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.54995,
    "c": 0.1261,
    "h": 254
  },
  "luminance": 0.16576
}

Semantic roles & 50–950 ramp

primary

#3773B9

secondary

#C8A884

accent

#9A4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3773B9

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

Preview Lab → · Contrast checker → · Palette generator →