#378DB6#378DB6

#378DB6 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.9% C 0.102 H 232.8°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX#378DB6
RGBrgb(55, 141, 182)
HSLhsl(199, 54%, 46%)
HSVhsv(199, 70%, 71%)
CMYKcmyk(69.8%, 22.5%, 0%, 28.6%)
CIE-LABlab(55.32, -12.30, -28.94)
CIE-LCHlch(55.32, 31.44, 246.98°)
OKLaboklab(60.94% -0.0618 -0.0813)
OKLCHoklch(60.94% 0.102 232.8)
XYZxyz(19.5406, 23.2372, 47.7023)
Luminance0.2324 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378DB6 #B66037
analogous
#37B6A0 #378DB6 #374EB6
triadic
#378DB6 #B6378D #8DB637
tetradic
#378DB6 #A037B6 #B66037 #4EB637
square
#378DB6 #A037B6 #B66037 #4EB637
split-complementary
#378DB6 #B6374E #B6A037
monochromatic
#1B4458 #296987 #378DB6 #5CA9CE #8BC2DC

Accessibility & contrast

On white

3.72
#378DB6 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.65
#378DB6 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DB6
5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378DB6#FFFFFF#000000##000000
##378DB61.003.725.655.65
#FFFFFF3.721.0021.0021.00
#0000005.6521.001.001.00
##0000005.6521.001.001.00

Color blindness preview

Protanopia (red-blind)
#798CB8
Deuteranopia (green-blind)
#677FB5
Tritanopia (blue-blind)
#00989B
Achromatopsia (no color)
#848484

Design tokens & code

CSS
--color: #378db6;
/* rgb */ color: rgb(55, 141, 182);
/* oklch */ color: oklch(60.9% 0.102 232.8);
Tailwind
colors: {
  custom: {
    50: '#7daecc',
    500: '#378db6',
    950: '#000000',
  },
}
SCSS
$custom: #378db6;
$custom-light: #7daecc;
$custom-dark: #000000;
JSON
{
  "hex": "#378db6",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 182
  },
  "hsl": {
    "h": 199.37,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.60943,
    "c": 0.10209,
    "h": 232.8
  },
  "luminance": 0.23239
}

Semantic roles & 50–950 ramp

primary
#378DB6
secondary
#C69882
accent
#7A4BDD
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #378DB6

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

Preview Lab → · Contrast checker → · Palette generator →

#378DB6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva