#3783D0#3783D0

#3783D0 is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 60.0% C 0.139 H 251.5°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3783D0
RGB	rgb(55, 131, 208)
HSL	hsl(210, 62%, 52%)
HSV	hsv(210, 74%, 82%)
CMYK	cmyk(73.6%, 37%, 0%, 18.4%)
CIE-LAB	lab(53.60, 2.64, -46.42)
CIE-LCH	lch(53.60, 46.49, 273.25°)
OKLab	oklab(59.99% -0.0441 -0.1322)
OKLCH	oklch(59.99% 0.139 251.5)
XYZ	xyz(21.0727, 21.5965, 62.7202)
Luminance	0.2160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783D0 #D08437

analogous

#37D0D0 #3783D0 #3837D0

triadic

#3783D0 #D03783 #83D037

tetradic

#3783D0 #D037D0 #D08437 #37D038

square

#3783D0 #D037D0 #D08437 #37D038

split-complementary

#3783D0 #D03837 #D0D037

monochromatic

#1B4672 #2664A3 #3783D0 #69A2DC #9AC0E7

Accessibility & contrast

On white

3.95

#3783D0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3783D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783D0

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783D0	#FFFFFF	#000000	##000000
##3783D0	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F88D3

Deuteranopia (green-blind)

#487ACE

Tritanopia (blue-blind)

#00959F

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3783d0;
/* rgb */ color: rgb(55, 131, 208);
/* oklch */ color: oklch(60.0% 0.139 251.5);

Tailwind

colors: {
  custom: {
    50: '#81a6df',
    500: '#3783d0',
    950: '#000000',
  },
}

SCSS

$custom: #3783d0;
$custom-light: #81a6df;
$custom-dark: #000000;

JSON

{
  "hex": "#3783d0",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 208
  },
  "hsl": {
    "h": 210.196,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.59989,
    "c": 0.13934,
    "h": 251.5
  },
  "luminance": 0.21599
}

Semantic roles & 50–950 ramp

primary

#3783D0

secondary

#D3B290

accent

#9443E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3783D0

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

Preview Lab → · Contrast checker → · Palette generator →