#3799D8#3799D8

#3799D8 is a light, vivid cyan. Relative luminance 0.286; OKLCH L 65.5% C 0.130 H 241.3°. Best body text is #000000 at 6.71:1 contrast (WCAG AA passes).

Color values

HEX#3799D8
RGBrgb(55, 153, 216)
HSLhsl(203, 67%, 53%)
HSVhsv(203, 75%, 85%)
CMYKcmyk(74.5%, 29.2%, 0%, 15.3%)
CIE-LABlab(60.38, -7.36, -40.20)
CIE-LCHlch(60.38, 40.87, 259.63°)
OKLaboklab(65.46% -0.0622 -0.1137)
OKLCHoklch(65.46% 0.13 241.3)
XYZxyz(25.3566, 28.5496, 69.1267)
Luminance0.2855 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3799D8 #D87637
analogous
#37D8C6 #3799D8 #3748D8
triadic
#3799D8 #D83799 #99D837
tetradic
#3799D8 #C637D8 #D87637 #48D837
square
#3799D8 #C637D8 #D87637 #48D837
split-complementary
#3799D8 #D83748 #D8C637
monochromatic
#18557C #2278B0 #3799D8 #6AB3E2 #9DCDEC

Accessibility & contrast

On white

3.13
#3799D8 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.71
#3799D8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3799D8
6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3799D8#FFFFFF#000000##000000
##3799D81.003.136.716.71
#FFFFFF3.131.0021.0021.00
#0000006.7121.001.001.00
##0000006.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#7C9ADB
Deuteranopia (green-blind)
#668BD7
Tritanopia (blue-blind)
#00A9AF
Achromatopsia (no color)
#929292

Design tokens & code

CSS
--color: #3799d8;
/* rgb */ color: rgb(55, 153, 216);
/* oklch */ color: oklch(65.5% 0.130 241.3);
Tailwind
colors: {
  custom: {
    50: '#83b6e4',
    500: '#3799d8',
    950: '#000000',
  },
}
SCSS
$custom: #3799d8;
$custom-light: #83b6e4;
$custom-dark: #000000;
JSON
{
  "hex": "#3799d8",
  "rgb": {
    "r": 55,
    "g": 153,
    "b": 216
  },
  "hsl": {
    "h": 203.478,
    "s": 67.364,
    "l": 53.137
  },
  "oklch": {
    "l": 0.65462,
    "c": 0.12962,
    "h": 241.3
  },
  "luminance": 0.28553
}

Semantic roles & 50–950 ramp

primary
#3799D8
secondary
#D8AE93
accent
#813EEA
background
#F8FBFE
surface
#F0F6FC
border
#CBD0D5
text
#0C1115
muted
#7D8084

Preview Lab

Preview with #3799D8

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

Preview Lab → · Contrast checker → · Palette generator →

#3799D8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva