#3684CB#3684CB

#3684CB is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 59.9% C 0.132 H 249.3°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3684CB
RGB	rgb(54, 132, 203)
HSL	hsl(209, 59%, 50%)
HSV	hsv(209, 73%, 80%)
CMYK	cmyk(73.4%, 35%, 0%, 20.4%)
CIE-LAB	lab(53.60, 0.10, -43.59)
CIE-LCH	lch(53.60, 43.59, 270.14°)
OKLab	oklab(59.9% -0.0469 -0.1239)
OKLCH	oklch(59.9% 0.132 249.3)
XYZ	xyz(20.5480, 21.5963, 59.5739)
Luminance	0.2160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3684CB #CB7D36

analogous

#36CBC8 #3684CB #3639CB

triadic

#3684CB #CB3684 #84CB36

tetradic

#3684CB #C836CB #CB7D36 #39CB36

square

#3684CB #C836CB #CB7D36 #39CB36

split-complementary

#3684CB #CB3639 #CBC836

monochromatic

#1C456B #28659C #3684CB #67A2D8 #97C0E4

Accessibility & contrast

On white

3.95

#3684CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3684CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3684CB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3684CB	#FFFFFF	#000000	##000000
##3684CB	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)

#6488CE

Deuteranopia (green-blind)

#4E7ACA

Tritanopia (blue-blind)

#00959E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3684cb;
/* rgb */ color: rgb(54, 132, 203);
/* oklch */ color: oklch(59.9% 0.132 249.3);

Tailwind

colors: {
  custom: {
    50: '#80a7db',
    500: '#3684cb',
    950: '#000000',
  },
}

SCSS

$custom: #3684cb;
$custom-light: #80a7db;
$custom-dark: #000000;

JSON

{
  "hex": "#3684cb",
  "rgb": {
    "r": 54,
    "g": 132,
    "b": 203
  },
  "hsl": {
    "h": 208.591,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.59896,
    "c": 0.13249,
    "h": 249.3
  },
  "luminance": 0.21599
}

Semantic roles & 50–950 ramp

primary

#3684CB

secondary

#D0AD8D

accent

#9046E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3684CB

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

Preview Lab → · Contrast checker → · Palette generator →