#3683CB#3683CB

#3683CB is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.7% C 0.133 H 249.8°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3683CB
RGB	rgb(54, 131, 203)
HSL	hsl(209, 59%, 50%)
HSV	hsv(209, 73%, 80%)
CMYK	cmyk(73.4%, 35.5%, 0%, 20.4%)
CIE-LAB	lab(53.30, 0.70, -44.05)
CIE-LCH	lch(53.30, 44.05, 270.91°)
OKLab	oklab(59.67% -0.046 -0.1253)
OKLCH	oklch(59.67% 0.133 249.8)
XYZ	xyz(20.4130, 21.3264, 59.5289)
Luminance	0.2133 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3683CB #CB7E36

analogous

#36CBC8 #3683CB #3639CB

triadic

#3683CB #CB3683 #83CB36

tetradic

#3683CB #C836CB #CB7E36 #39CB36

square

#3683CB #C836CB #CB7E36 #39CB36

split-complementary

#3683CB #CB3639 #CBC836

monochromatic

#1C456B #28649C #3683CB #67A1D8 #97BFE4

Accessibility & contrast

On white

3.99

#3683CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#3683CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3683CB

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3683CB	#FFFFFF	#000000	##000000
##3683CB	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6287CE

Deuteranopia (green-blind)

#4C79CA

Tritanopia (blue-blind)

#00949D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3683cb;
/* rgb */ color: rgb(54, 131, 203);
/* oklch */ color: oklch(59.7% 0.133 249.8);

Tailwind

colors: {
  custom: {
    50: '#80a6db',
    500: '#3683cb',
    950: '#000000',
  },
}

SCSS

$custom: #3683cb;
$custom-light: #80a6db;
$custom-dark: #000000;

JSON

{
  "hex": "#3683cb",
  "rgb": {
    "r": 54,
    "g": 131,
    "b": 203
  },
  "hsl": {
    "h": 208.993,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.59667,
    "c": 0.13344,
    "h": 249.8
  },
  "luminance": 0.21329
}

Semantic roles & 50–950 ramp

primary

#3683CB

secondary

#D0AD8D

accent

#9146E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3683CB

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

Preview Lab → · Contrast checker → · Palette generator →