#3688B9#3688B9

#3688B9 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.108 H 238.7°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX#3688B9
RGBrgb(54, 136, 185)
HSLhsl(202, 55%, 47%)
HSVhsv(202, 71%, 73%)
CMYKcmyk(70.8%, 26.5%, 0%, 27.5%)
CIE-LABlab(53.91, -8.59, -32.84)
CIE-LCHlch(53.91, 33.94, 255.33°)
OKLaboklab(59.86% -0.0562 -0.0926)
OKLCHoklch(59.86% 0.108 238.7)
XYZxyz(19.0790, 21.8933, 49.1098)
Luminance0.2190 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3688B9 #B96736
analogous
#36B9A9 #3688B9 #3646B9
triadic
#3688B9 #B93688 #88B936
tetradic
#3688B9 #A936B9 #B96736 #46B936
square
#3688B9 #A936B9 #B96736 #46B936
split-complementary
#3688B9 #B93646 #B9A936
monochromatic
#1A425A #28658A #3688B9 #5DA5D0 #8CBFDD

Accessibility & contrast

On white

3.90
#3688B9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.38
#3688B9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688B9
5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3688B9#FFFFFF#000000##000000
##3688B91.003.905.385.38
#FFFFFF3.901.0021.0021.00
#0000005.3821.001.001.00
##0000005.3821.001.001.00

Color blindness preview

Protanopia (red-blind)
#7188BB
Deuteranopia (green-blind)
#5F7BB8
Tritanopia (blue-blind)
#009499
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3688b9;
/* rgb */ color: rgb(54, 136, 185);
/* oklch */ color: oklch(59.9% 0.108 238.7);
Tailwind
colors: {
  custom: {
    50: '#7daace',
    500: '#3688b9',
    950: '#000000',
  },
}
SCSS
$custom: #3688b9;
$custom-light: #7daace;
$custom-dark: #000000;
JSON
{
  "hex": "#3688b9",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 185
  },
  "hsl": {
    "h": 202.443,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.59863,
    "c": 0.10831,
    "h": 238.7
  },
  "luminance": 0.21895
}

Semantic roles & 50–950 ramp

primary
#3688B9
secondary
#C89D83
accent
#814ADE
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #3688B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3688B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva