#3773B8#3773B8

#3773B8 is a mid, vivid cyan. Relative luminance 0.165; OKLCH L 54.9% C 0.125 H 253.7°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3773B8
RGB	rgb(55, 115, 184)
HSL	hsl(212, 54%, 47%)
HSV	hsv(212, 70%, 72%)
CMYK	cmyk(70.1%, 37.5%, 0%, 27.8%)
CIE-LAB	lab(47.67, 3.68, -42.09)
CIE-LCH	lch(47.67, 42.25, 275.00°)
OKLab	oklab(54.94% -0.035 -0.1198)
OKLCH	oklch(54.94% 0.125 253.7)
XYZ	xyz(16.3548, 16.5326, 47.6673)
Luminance	0.1653 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773B8 #B87C37

analogous

#37B4B8 #3773B8 #3C37B8

triadic

#3773B8 #B83773 #73B837

tetradic

#3773B8 #B837B4 #B87C37 #37B83C

square

#3773B8 #B837B4 #B87C37 #37B83C

split-complementary

#3773B8 #B83C37 #B4B837

monochromatic

#1B385A #295689 #3773B8 #5D92CF #8DB2DD

Accessibility & contrast

On white

4.88

#3773B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3773B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773B8

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773B8	#FFFFFF	#000000	##FFFFFF
##3773B8	1.00	4.88	4.31	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5478BB

Deuteranopia (green-blind)

#416CB7

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3773b8;
/* rgb */ color: rgb(55, 115, 184);
/* oklch */ color: oklch(54.9% 0.125 253.7);

Tailwind

colors: {
  custom: {
    50: '#7d9acd',
    500: '#3773b8',
    950: '#000000',
  },
}

SCSS

$custom: #3773b8;
$custom-light: #7d9acd;
$custom-dark: #000000;

JSON

{
  "hex": "#3773b8",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 184
  },
  "hsl": {
    "h": 212.093,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.54935,
    "c": 0.12478,
    "h": 253.7
  },
  "luminance": 0.16534
}

Semantic roles & 50–950 ramp

primary

#3773B8

secondary

#C7A884

accent

#994ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3773B8

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

Preview Lab → · Contrast checker → · Palette generator →