#3783CD#3783CD

#3783CD is a mid, vivid cyan. Relative luminance 0.215; OKLCH L 59.8% C 0.136 H 250.7°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3783CD
RGB	rgb(55, 131, 205)
HSL	hsl(210, 60%, 51%)
HSV	hsv(210, 73%, 80%)
CMYK	cmyk(73.2%, 36.1%, 0%, 19.6%)
CIE-LAB	lab(53.44, 1.55, -44.97)
CIE-LCH	lch(53.44, 44.99, 271.98°)
OKLab	oklab(59.82% -0.0449 -0.1279)
OKLCH	oklch(59.82% 0.136 250.7)
XYZ	xyz(20.7072, 21.4503, 60.7948)
Luminance	0.2145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3783CD #CD8137

analogous

#37CDCC #3783CD #3738CD

triadic

#3783CD #CD3783 #83CD37

tetradic

#3783CD #CC37CD #CD8137 #38CD37

square

#3783CD #CC37CD #CD8137 #38CD37

split-complementary

#3783CD #CD3738 #CDCC37

monochromatic

#1C456E #28649F #3783CD #68A1D9 #99C0E5

Accessibility & contrast

On white

3.97

#3783CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#3783CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3783CD

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3783CD	#FFFFFF	#000000	##000000
##3783CD	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6187D0

Deuteranopia (green-blind)

#4B79CC

Tritanopia (blue-blind)

#00959E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3783cd;
/* rgb */ color: rgb(55, 131, 205);
/* oklch */ color: oklch(59.8% 0.136 250.7);

Tailwind

colors: {
  custom: {
    50: '#81a6dc',
    500: '#3783cd',
    950: '#000000',
  },
}

SCSS

$custom: #3783cd;
$custom-light: #81a6dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3783cd",
  "rgb": {
    "r": 55,
    "g": 131,
    "b": 205
  },
  "hsl": {
    "h": 209.6,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.59815,
    "c": 0.13558,
    "h": 250.7
  },
  "luminance": 0.21453
}

Semantic roles & 50–950 ramp

primary

#3783CD

secondary

#D1AF8F

accent

#9345E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3783CD

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

Preview Lab → · Contrast checker → · Palette generator →