#3683CF#3683CF

#3683CF is a mid, vivid cyan. Relative luminance 0.215; OKLCH L 59.9% C 0.138 H 251.1°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX#3683CF
RGBrgb(54, 131, 207)
HSLhsl(210, 61%, 51%)
HSVhsv(210, 74%, 81%)
CMYKcmyk(73.9%, 36.7%, 0%, 18.8%)
CIE-LABlab(53.51, 2.14, -45.98)
CIE-LCHlch(53.51, 46.03, 272.67°)
OKLaboklab(59.9% -0.0449 -0.1309)
OKLCHoklch(59.9% 0.138 251.1)
XYZxyz(20.8959, 21.5195, 62.0718)
Luminance0.2152 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3683CF #CF8236
analogous
#36CFCF #3683CF #3636CF
triadic
#3683CF #CF3683 #83CF36
tetradic
#3683CF #CF36CF #CF8236 #36CF36
square
#3683CF #CF36CF #CF8236 #36CF36
split-complementary
#3683CF #CF3636 #CFCF36
monochromatic
#1B4670 #2764A1 #3683CF #67A1DB #99C0E7

Accessibility & contrast

On white

3.96
#3683CF on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.30
#3683CF on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3683CF
5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3683CF#FFFFFF#000000##000000
##3683CF1.003.965.305.30
#FFFFFF3.961.0021.0021.00
#0000005.3021.001.001.00
##0000005.3021.001.001.00

Color blindness preview

Protanopia (red-blind)
#6088D2
Deuteranopia (green-blind)
#4979CE
Tritanopia (blue-blind)
#00959F
Achromatopsia (no color)
#808080

Design tokens & code

CSS
--color: #3683cf;
/* rgb */ color: rgb(54, 131, 207);
/* oklch */ color: oklch(59.9% 0.138 251.1);
Tailwind
colors: {
  custom: {
    50: '#81a6de',
    500: '#3683cf',
    950: '#000000',
  },
}
SCSS
$custom: #3683cf;
$custom-light: #81a6de;
$custom-dark: #000000;
JSON
{
  "hex": "#3683cf",
  "rgb": {
    "r": 54,
    "g": 131,
    "b": 207
  },
  "hsl": {
    "h": 209.804,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.59899,
    "c": 0.13843,
    "h": 251.1
  },
  "luminance": 0.21522
}

Semantic roles & 50–950 ramp

primary
#3683CF
secondary
#D2B08F
accent
#9343E5
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C0F15
muted
#7D7F83

Preview Lab

Preview with #3683CF

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

Preview Lab → · Contrast checker → · Palette generator →

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