#3688B8#3688B8

#3688B8 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.8% C 0.107 H 238.2°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX#3688B8
RGBrgb(54, 136, 184)
HSLhsl(202, 55%, 47%)
HSVhsv(202, 71%, 72%)
CMYKcmyk(70.7%, 26.1%, 0%, 27.8%)
CIE-LABlab(53.87, -8.94, -32.34)
CIE-LCHlch(53.87, 33.55, 254.55°)
OKLaboklab(59.81% -0.0566 -0.0911)
OKLCHoklch(59.81% 0.107 238.2)
XYZxyz(18.9738, 21.8512, 48.5558)
Luminance0.2185 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3688B8 #B86636
analogous
#36B8A7 #3688B8 #3647B8
triadic
#3688B8 #B83688 #88B836
tetradic
#3688B8 #A736B8 #B86636 #47B836
square
#3688B8 #A736B8 #B86636 #47B836
split-complementary
#3688B8 #B83647 #B8A736
monochromatic
#1A4259 #286589 #3688B8 #5CA5CF #8BBFDD

Accessibility & contrast

On white

3.91
#3688B8 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.37
#3688B8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688B8
5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3688B8#FFFFFF#000000##000000
##3688B81.003.915.375.37
#FFFFFF3.911.0021.0021.00
#0000005.3721.001.001.00
##0000005.3721.001.001.00

Color blindness preview

Protanopia (red-blind)
#7188BA
Deuteranopia (green-blind)
#607BB7
Tritanopia (blue-blind)
#009498
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3688b8;
/* rgb */ color: rgb(54, 136, 184);
/* oklch */ color: oklch(59.8% 0.107 238.2);
Tailwind
colors: {
  custom: {
    50: '#7daacd',
    500: '#3688b8',
    950: '#000000',
  },
}
SCSS
$custom: #3688b8;
$custom-light: #7daacd;
$custom-dark: #000000;
JSON
{
  "hex": "#3688b8",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 184
  },
  "hsl": {
    "h": 202.154,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.59812,
    "c": 0.10725,
    "h": 238.2
  },
  "luminance": 0.21853
}

Semantic roles & 50–950 ramp

primary
#3688B8
secondary
#C79C82
accent
#814ADE
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #3688B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3688B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva