#3784CC#3784CC

#3784CC is a mid, vivid cyan. Relative luminance 0.217; OKLCH L 60.0% C 0.133 H 249.8°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3784CC
RGB	rgb(55, 132, 204)
HSL	hsl(209, 59%, 51%)
HSV	hsv(209, 73%, 80%)
CMYK	cmyk(73%, 35.3%, 0%, 20%)
CIE-LAB	lab(53.68, 0.60, -44.02)
CIE-LCH	lch(53.68, 44.03, 270.78°)
OKLab	oklab(59.99% -0.0461 -0.1252)
OKLCH	oklch(59.99% 0.133 249.8)
XYZ	xyz(20.7218, 21.6721, 60.2061)
Luminance	0.2167 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3784CC #CC7F37

analogous

#37CCC9 #3784CC #3739CC

triadic

#3784CC #CC3784 #84CC37

tetradic

#3784CC #C937CC #CC7F37 #39CC37

square

#3784CC #C937CC #CC7F37 #39CC37

split-complementary

#3784CC #CC3739 #CCC937

monochromatic

#1C466D #28659E #3784CC #68A2D8 #99C0E5

Accessibility & contrast

On white

3.94

#3784CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#3784CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3784CC

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3784CC	#FFFFFF	#000000	##000000
##3784CC	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6388CF

Deuteranopia (green-blind)

#4D7ACB

Tritanopia (blue-blind)

#00959E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3784cc;
/* rgb */ color: rgb(55, 132, 204);
/* oklch */ color: oklch(60.0% 0.133 249.8);

Tailwind

colors: {
  custom: {
    50: '#81a7dc',
    500: '#3784cc',
    950: '#000000',
  },
}

SCSS

$custom: #3784cc;
$custom-light: #81a7dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3784cc",
  "rgb": {
    "r": 55,
    "g": 132,
    "b": 204
  },
  "hsl": {
    "h": 208.993,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.59985,
    "c": 0.13337,
    "h": 249.8
  },
  "luminance": 0.21674
}

Semantic roles & 50–950 ramp

primary

#3784CC

secondary

#D0AE8E

accent

#9145E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3784CC

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

Preview Lab → · Contrast checker → · Palette generator →