#378DC4#378DC4

#378DC4 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.6% C 0.116 H 240.7°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX#378DC4
RGBrgb(55, 141, 196)
HSLhsl(203, 56%, 49%)
HSVhsv(203, 72%, 77%)
CMYKcmyk(71.9%, 28.1%, 0%, 23.1%)
CIE-LABlab(55.93, -7.49, -35.94)
CIE-LCHlch(55.93, 36.71, 258.22°)
OKLaboklab(61.64% -0.057 -0.1015)
OKLCHoklch(61.64% 0.116 240.7)
XYZxyz(21.0604, 23.8451, 55.7065)
Luminance0.2385 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378DC4 #C46E37
analogous
#37C4B5 #378DC4 #3747C4
triadic
#378DC4 #C4378D #8DC437
tetradic
#378DC4 #B537C4 #C46E37 #47C437
square
#378DC4 #B537C4 #C46E37 #47C437
split-complementary
#378DC4 #C43747 #C4B537
monochromatic
#1C4864 #2A6B94 #378DC4 #65A8D4 #94C3E1

Accessibility & contrast

On white

3.64
#378DC4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.77
#378DC4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DC4
5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378DC4#FFFFFF#000000##000000
##378DC41.003.645.775.77
#FFFFFF3.641.0021.0021.00
#0000005.7721.001.001.00
##0000005.7721.001.001.00

Color blindness preview

Protanopia (red-blind)
#748EC6
Deuteranopia (green-blind)
#6080C3
Tritanopia (blue-blind)
#009BA0
Achromatopsia (no color)
#868686

Design tokens & code

CSS
--color: #378dc4;
/* rgb */ color: rgb(55, 141, 196);
/* oklch */ color: oklch(61.6% 0.116 240.7);
Tailwind
colors: {
  custom: {
    50: '#7faed6',
    500: '#378dc4',
    950: '#000000',
  },
}
SCSS
$custom: #378dc4;
$custom-light: #7faed6;
$custom-dark: #000000;
JSON
{
  "hex": "#378dc4",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 196
  },
  "hsl": {
    "h": 203.404,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.61636,
    "c": 0.11642,
    "h": 240.7
  },
  "luminance": 0.23848
}

Semantic roles & 50–950 ramp

primary
#378DC4
secondary
#CCA48B
accent
#8348DF
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0B1014
muted
#7C7F83

Preview Lab

Preview with #378DC4

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

Preview Lab → · Contrast checker → · Palette generator →

#378DC4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva