#3783C9#3783C9

#3783C9 is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.6% C 0.131 H 249.4°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3783C9
RGB	rgb(55, 131, 201)
HSL	hsl(209, 57%, 50%)
HSV	hsv(209, 73%, 79%)
CMYK	cmyk(72.6%, 34.8%, 0%, 21.2%)
CIE-LAB	lab(53.23, 0.12, -43.02)
CIE-LCH	lch(53.23, 43.02, 270.16°)
OKLab	oklab(59.59% -0.0459 -0.1223)
OKLCH	oklch(59.59% 0.131 249.4)
XYZ	xyz(20.2305, 21.2596, 58.2843)
Luminance	0.2126 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783C9 #C97D37

analogous

#37C9C6 #3783C9 #373AC9

triadic

#3783C9 #C93783 #83C937

tetradic

#3783C9 #C637C9 #C97D37 #3AC937

square

#3783C9 #C637C9 #C97D37 #3AC937

split-complementary

#3783C9 #C9373A #C9C637

monochromatic

#1C4469 #296499 #3783C9 #67A1D6 #97BFE3

Accessibility & contrast

On white

4.00

#3783C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#3783C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783C9

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783C9	#FFFFFF	#000000	##000000
##3783C9	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6387CC

Deuteranopia (green-blind)

#4E79C8

Tritanopia (blue-blind)

#00949C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3783c9;
/* rgb */ color: rgb(55, 131, 201);
/* oklch */ color: oklch(59.6% 0.131 249.4);

Tailwind

colors: {
  custom: {
    50: '#80a6da',
    500: '#3783c9',
    950: '#000000',
  },
}

SCSS

$custom: #3783c9;
$custom-light: #80a6da;
$custom-dark: #000000;

JSON

{
  "hex": "#3783c9",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 201
  },
  "hsl": {
    "h": 208.767,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.59585,
    "c": 0.1306,
    "h": 249.4
  },
  "luminance": 0.21262
}

Semantic roles & 50–950 ramp

primary

#3783C9

secondary

#CFAD8D

accent

#9147E1

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3783C9

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

Preview Lab → · Contrast checker → · Palette generator →