#3773BE#3773BE

#3773BE is a mid, vivid cyan. Relative luminance 0.168; OKLCH L 55.3% C 0.133 H 255.3°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3773BE
RGB	rgb(55, 115, 190)
HSL	hsl(213, 55%, 48%)
HSV	hsv(213, 71%, 75%)
CMYK	cmyk(71.1%, 39.5%, 0%, 25.5%)
CIE-LAB	lab(47.99, 5.86, -45.04)
CIE-LCH	lch(47.99, 45.42, 277.42°)
OKLab	oklab(55.3% -0.0336 -0.1284)
OKLCH	oklch(55.3% 0.133 255.3)
XYZ	xyz(16.9971, 16.7896, 51.0501)
Luminance	0.1679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3773BE #BE8237

analogous

#37B6BE #3773BE #3E37BE

triadic

#3773BE #BE3773 #73BE37

tetradic

#3773BE #BE37B6 #BE8237 #37BE3E

square

#3773BE #BE37B6 #BE8237 #37BE3E

split-complementary

#3773BE #BE3E37 #B6BE37

monochromatic

#1C3A5F #29568F #3773BE #6193D1 #90B3DF

Accessibility & contrast

On white

4.82

#3773BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#3773BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3773BE

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3773BE	#FFFFFF	#000000	##FFFFFF
##3773BE	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5079C1

Deuteranopia (green-blind)

#3B6CBC

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3773be;
/* rgb */ color: rgb(55, 115, 190);
/* oklch */ color: oklch(55.3% 0.133 255.3);

Tailwind

colors: {
  custom: {
    50: '#7e9ad2',
    500: '#3773be',
    950: '#000000',
  },
}

SCSS

$custom: #3773be;
$custom-light: #7e9ad2;
$custom-dark: #000000;

JSON

{
  "hex": "#3773be",
  "rgb": {
    "r": 55,
    "g": 115,
    "b": 190
  },
  "hsl": {
    "h": 213.333,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.55298,
    "c": 0.13271,
    "h": 255.3
  },
  "luminance": 0.16791
}

Semantic roles & 50–950 ramp

primary

#3773BE

secondary

#CAAC87

accent

#9C49DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3773BE

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

Preview Lab → · Contrast checker → · Palette generator →