#378BC5#378BC5

#378BC5 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.2% C 0.119 H 242.6°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX#378BC5
RGBrgb(55, 139, 197)
HSLhsl(205, 56%, 49%)
HSVhsv(205, 72%, 77%)
CMYKcmyk(72.1%, 29.4%, 0%, 22.7%)
CIE-LABlab(55.39, -5.99, -37.36)
CIE-LCHlch(55.39, 37.84, 260.88°)
OKLaboklab(61.22% -0.0548 -0.1056)
OKLCHoklch(61.22% 0.119 242.6)
XYZxyz(20.8823, 23.3063, 56.2105)
Luminance0.2331 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378BC5 #C57137
analogous
#37C5B8 #378BC5 #3744C5
triadic
#378BC5 #C5378B #8BC537
tetradic
#378BC5 #B837C5 #C57137 #44C537
square
#378BC5 #B837C5 #C57137 #44C537
split-complementary
#378BC5 #C53744 #C5B837
monochromatic
#1C4765 #2A6995 #378BC5 #65A7D4 #95C2E1

Accessibility & contrast

On white

3.71
#378BC5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.66
#378BC5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BC5
5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378BC5#FFFFFF#000000##000000
##378BC51.003.715.665.66
#FFFFFF3.711.0021.0021.00
#0000005.6621.001.001.00
##0000005.6621.001.001.00

Color blindness preview

Protanopia (red-blind)
#708CC8
Deuteranopia (green-blind)
#5D7FC4
Tritanopia (blue-blind)
#00999F
Achromatopsia (no color)
#858585

Design tokens & code

CSS
--color: #378bc5;
/* rgb */ color: rgb(55, 139, 197);
/* oklch */ color: oklch(61.2% 0.119 242.6);
Tailwind
colors: {
  custom: {
    50: '#80acd7',
    500: '#378bc5',
    950: '#000000',
  },
}
SCSS
$custom: #378bc5;
$custom-light: #80acd7;
$custom-dark: #000000;
JSON
{
  "hex": "#378bc5",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 197
  },
  "hsl": {
    "h": 204.507,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.61219,
    "c": 0.11899,
    "h": 242.6
  },
  "luminance": 0.23309
}

Semantic roles & 50–950 ramp

primary
#378BC5
secondary
#CDA68B
accent
#8648E0
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0B1014
muted
#7C7F83

Preview Lab

Preview with #378BC5

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

Preview Lab → · Contrast checker → · Palette generator →

#378BC5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva