#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
RGBrgb(54, 131, 203)
HSLhsl(209, 59%, 50%)
HSVhsv(209, 73%, 80%)
CMYKcmyk(73.4%, 35.5%, 0%, 20.4%)
CIE-LABlab(53.30, 0.70, -44.05)
CIE-LCHlch(53.30, 44.05, 270.91°)
OKLaboklab(59.67% -0.046 -0.1253)
OKLCHoklch(59.67% 0.133 249.8)
XYZxyz(20.4130, 21.3264, 59.5289)
Luminance0.2133 (WCAG relative)
Temperaturecool
Familycyan

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
##3683CB1.003.995.275.27
#FFFFFF3.991.0021.0021.00
#0000005.2721.001.001.00
##0000005.2721.001.001.00

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 →

#3683CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva