#3773B4#3773B4

#3773B4 is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 54.7% C 0.120 H 252.4°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3773B4
RGB	rgb(55, 115, 180)
HSL	hsl(211, 53%, 46%)
HSV	hsv(211, 69%, 71%)
CMYK	cmyk(69.4%, 36.1%, 0%, 29.4%)
CIE-LAB	lab(47.45, 2.24, -40.11)
CIE-LCH	lch(47.45, 40.18, 273.19°)
OKLab	oklab(54.7% -0.0361 -0.114)
OKLCH	oklch(54.7% 0.12 252.4)
XYZ	xyz(15.9415, 16.3673, 45.4902)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773B4 #B47837

analogous

#37B1B4 #3773B4 #3A37B4

triadic

#3773B4 #B43773 #73B437

tetradic

#3773B4 #B437B1 #B47837 #37B43A

square

#3773B4 #B437B1 #B47837 #37B43A

split-complementary

#3773B4 #B43A37 #B1B437

monochromatic

#1A3756 #295585 #3773B4 #5B92CD #8AB1DB

Accessibility & contrast

On white

4.91

#3773B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3773B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773B4

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773B4	#FFFFFF	#000000	##FFFFFF
##3773B4	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5677B7

Deuteranopia (green-blind)

#446BB3

Tritanopia (blue-blind)

#00828B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3773b4;
/* rgb */ color: rgb(55, 115, 180);
/* oklch */ color: oklch(54.7% 0.120 252.4);

Tailwind

colors: {
  custom: {
    50: '#7c9acb',
    500: '#3773b4',
    950: '#000000',
  },
}

SCSS

$custom: #3773b4;
$custom-light: #7c9acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3773b4",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 180
  },
  "hsl": {
    "h": 211.2,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.54699,
    "c": 0.11954,
    "h": 252.4
  },
  "luminance": 0.16369
}

Semantic roles & 50–950 ramp

primary

#3773B4

secondary

#C6A581

accent

#974BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3773B4

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

Preview Lab → · Contrast checker → · Palette generator →