#3688BD#3688BD

#3688BD is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.1% C 0.113 H 240.8°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX#3688BD
RGBrgb(54, 136, 189)
HSLhsl(204, 56%, 48%)
HSVhsv(204, 71%, 74%)
CMYKcmyk(71.4%, 28%, 0%, 25.9%)
CIE-LABlab(54.10, -7.20, -34.84)
CIE-LCHlch(54.10, 35.57, 258.32°)
OKLaboklab(60.07% -0.0549 -0.0984)
OKLCHoklch(60.07% 0.113 240.8)
XYZxyz(19.5072, 22.0645, 51.3650)
Luminance0.2207 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3688BD #BD6B36
analogous
#36BDAF #3688BD #3644BD
triadic
#3688BD #BD3688 #88BD36
tetradic
#3688BD #AF36BD #BD6B36 #44BD36
square
#3688BD #AF36BD #BD6B36 #44BD36
split-complementary
#3688BD #BD3644 #BDAF36
monochromatic
#1B435E #28668D #3688BD #5FA4D1 #8FBFDF

Accessibility & contrast

On white

3.88
#3688BD on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.41
#3688BD on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688BD
5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3688BD#FFFFFF#000000##000000
##3688BD1.003.885.415.41
#FFFFFF3.881.0021.0021.00
#0000005.4121.001.001.00
##0000005.4121.001.001.00

Color blindness preview

Protanopia (red-blind)
#7089BF
Deuteranopia (green-blind)
#5D7CBC
Tritanopia (blue-blind)
#00959A
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3688bd;
/* rgb */ color: rgb(54, 136, 189);
/* oklch */ color: oklch(60.1% 0.113 240.8);
Tailwind
colors: {
  custom: {
    50: '#7eaad1',
    500: '#3688bd',
    950: '#000000',
  },
}
SCSS
$custom: #3688bd;
$custom-light: #7eaad1;
$custom-dark: #000000;
JSON
{
  "hex": "#3688bd",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 189
  },
  "hsl": {
    "h": 203.556,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.60067,
    "c": 0.11266,
    "h": 240.8
  },
  "luminance": 0.22067
}

Semantic roles & 50–950 ramp

primary
#3688BD
secondary
#C9A085
accent
#8449DF
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1014
muted
#7C7F82

Preview Lab

Preview with #3688BD

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

Preview Lab → · Contrast checker → · Palette generator →

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