#3788D3#3788D3

#3788D3 is a mid, vivid cyan. Relative luminance 0.231; OKLCH L 61.3% C 0.138 H 249.7°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX#3788D3
RGBrgb(55, 136, 211)
HSLhsl(209, 64%, 52%)
HSVhsv(209, 74%, 83%)
CMYKcmyk(73.9%, 35.5%, 0%, 17.3%)
CIE-LABlab(55.20, 0.73, -45.57)
CIE-LCHlch(55.20, 45.58, 270.92°)
OKLaboklab(61.3% -0.0479 -0.1296)
OKLCHoklch(61.3% 0.138 249.7)
XYZxyz(22.1331, 23.1212, 64.9117)
Luminance0.2312 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3788D3 #D38237
analogous
#37D3D0 #3788D3 #373AD3
triadic
#3788D3 #D33788 #88D337
tetradic
#3788D3 #D037D3 #D38237 #3AD337
square
#3788D3 #D037D3 #D38237 #3AD337
split-complementary
#3788D3 #D3373A #D3D037
monochromatic
#1A4A76 #2569A8 #3788D3 #69A6DE #9BC4E9

Accessibility & contrast

On white

3.73
#3788D3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.62
#3788D3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3788D3
5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3788D3#FFFFFF#000000##000000
##3788D31.003.735.625.62
#FFFFFF3.731.0021.0021.00
#0000005.6221.001.001.00
##0000005.6221.001.001.00

Color blindness preview

Protanopia (red-blind)
#668CD6
Deuteranopia (green-blind)
#4F7ED2
Tritanopia (blue-blind)
#009AA3
Achromatopsia (no color)
#848484

Design tokens & code

CSS
--color: #3788d3;
/* rgb */ color: rgb(55, 136, 211);
/* oklch */ color: oklch(61.3% 0.138 249.7);
Tailwind
colors: {
  custom: {
    50: '#82aae1',
    500: '#3788d3',
    950: '#000000',
  },
}
SCSS
$custom: #3788d3;
$custom-light: #82aae1;
$custom-dark: #000000;
JSON
{
  "hex": "#3788d3",
  "rgb": {
    "r": 55,
    "g": 136,
    "b": 211
  },
  "hsl": {
    "h": 208.846,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.61295,
    "c": 0.13821,
    "h": 249.7
  },
  "luminance": 0.23124
}

Semantic roles & 50–950 ramp

primary
#3788D3
secondary
#D5B291
accent
#9141E7
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3788D3

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

Preview Lab → · Contrast checker → · Palette generator →

#3788D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva