#3773BC#3773BC

#3773BC is a mid, vivid cyan. Relative luminance 0.167; OKLCH L 55.2% C 0.130 H 254.8°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3773BC
RGB	rgb(55, 115, 188)
HSL	hsl(213, 55%, 48%)
HSV	hsv(213, 71%, 74%)
CMYK	cmyk(70.7%, 38.8%, 0%, 26.3%)
CIE-LAB	lab(47.88, 5.13, -44.06)
CIE-LCH	lch(47.88, 44.36, 276.65°)
OKLab	oklab(55.18% -0.034 -0.1255)
OKLCH	oklch(55.18% 0.13 254.8)
XYZ	xyz(16.7800, 16.7027, 49.9068)
Luminance	0.1671 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773BC #BC8037

analogous

#37B6BC #3773BC #3D37BC

triadic

#3773BC #BC3773 #73BC37

tetradic

#3773BC #BC37B6 #BC8037 #37BC3D

square

#3773BC #BC37B6 #BC8037 #37BC3D

split-complementary

#3773BC #BC3D37 #B6BC37

monochromatic

#1B395D #29568D #3773BC #6093D0 #8FB3DE

Accessibility & contrast

On white

4.84

#3773BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#3773BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773BC

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773BC	#FFFFFF	#000000	##FFFFFF
##3773BC	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BF

Deuteranopia (green-blind)

#3D6CBB

Tritanopia (blue-blind)

#00848E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3773bc;
/* rgb */ color: rgb(55, 115, 188);
/* oklch */ color: oklch(55.2% 0.130 254.8);

Tailwind

colors: {
  custom: {
    50: '#7e9ad0',
    500: '#3773bc',
    950: '#000000',
  },
}

SCSS

$custom: #3773bc;
$custom-light: #7e9ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3773bc",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 188
  },
  "hsl": {
    "h": 212.932,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.55176,
    "c": 0.13007,
    "h": 254.8
  },
  "luminance": 0.16705
}

Semantic roles & 50–950 ramp

primary

#3773BC

secondary

#C9AB86

accent

#9B4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3773BC

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

Preview Lab → · Contrast checker → · Palette generator →