#3773B5#3773B5

#3773B5 is a mid, vivid cyan. Relative luminance 0.164; OKLCH L 54.8% C 0.121 H 252.8°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3773B5
RGB	rgb(55, 115, 181)
HSL	hsl(211, 53%, 46%)
HSV	hsv(211, 70%, 71%)
CMYK	cmyk(69.6%, 36.5%, 0%, 29%)
CIE-LAB	lab(47.51, 2.60, -40.61)
CIE-LCH	lch(47.51, 40.69, 273.66°)
OKLab	oklab(54.76% -0.0358 -0.1154)
OKLCH	oklch(54.76% 0.121 252.8)
XYZ	xyz(16.0437, 16.4082, 46.0287)
Luminance	0.1641 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773B5 #B57937

analogous

#37B2B5 #3773B5 #3A37B5

triadic

#3773B5 #B53773 #73B537

tetradic

#3773B5 #B537B2 #B57937 #37B53A

square

#3773B5 #B537B2 #B57937 #37B53A

split-complementary

#3773B5 #B53A37 #B2B537

monochromatic

#1A3757 #295586 #3773B5 #5C92CD #8BB1DC

Accessibility & contrast

On white

4.90

#3773B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3773B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773B5

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773B5	#FFFFFF	#000000	##FFFFFF
##3773B5	1.00	4.90	4.28	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5577B8

Deuteranopia (green-blind)

#436BB4

Tritanopia (blue-blind)

#00828B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3773b5;
/* rgb */ color: rgb(55, 115, 181);
/* oklch */ color: oklch(54.8% 0.121 252.8);

Tailwind

colors: {
  custom: {
    50: '#7c9acb',
    500: '#3773b5',
    950: '#000000',
  },
}

SCSS

$custom: #3773b5;
$custom-light: #7c9acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3773b5",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 181
  },
  "hsl": {
    "h": 211.429,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.54758,
    "c": 0.12084,
    "h": 252.8
  },
  "luminance": 0.1641
}

Semantic roles & 50–950 ramp

primary

#3773B5

secondary

#C6A682

accent

#974BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3773B5

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

Preview Lab → · Contrast checker → · Palette generator →