#378BC4#378BC4

#378BC4 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.2% C 0.118 H 242.1°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX#378BC4
RGBrgb(55, 139, 196)
HSLhsl(204, 56%, 49%)
HSVhsv(204, 72%, 77%)
CMYKcmyk(71.9%, 29.1%, 0%, 23.1%)
CIE-LABlab(55.34, -6.34, -36.87)
CIE-LCHlch(55.34, 37.41, 260.24°)
OKLaboklab(61.17% -0.0551 -0.1042)
OKLCHoklch(61.17% 0.118 242.1)
XYZxyz(20.7681, 23.2606, 55.6091)
Luminance0.2326 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378BC4 #C47037
analogous
#37C4B7 #378BC4 #3745C4
triadic
#378BC4 #C4378B #8BC437
tetradic
#378BC4 #B737C4 #C47037 #45C437
square
#378BC4 #B737C4 #C47037 #45C437
split-complementary
#378BC4 #C43745 #C4B737
monochromatic
#1C4764 #2A6994 #378BC4 #65A7D4 #94C2E1

Accessibility & contrast

On white

3.72
#378BC4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.65
#378BC4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BC4
5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378BC4#FFFFFF#000000##000000
##378BC41.003.725.655.65
#FFFFFF3.721.0021.0021.00
#0000005.6521.001.001.00
##0000005.6521.001.001.00

Color blindness preview

Protanopia (red-blind)
#718CC7
Deuteranopia (green-blind)
#5D7FC3
Tritanopia (blue-blind)
#00999F
Achromatopsia (no color)
#848484

Design tokens & code

CSS
--color: #378bc4;
/* rgb */ color: rgb(55, 139, 196);
/* oklch */ color: oklch(61.2% 0.118 242.1);
Tailwind
colors: {
  custom: {
    50: '#7facd6',
    500: '#378bc4',
    950: '#000000',
  },
}
SCSS
$custom: #378bc4;
$custom-light: #7facd6;
$custom-dark: #000000;
JSON
{
  "hex": "#378bc4",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 196
  },
  "hsl": {
    "h": 204.255,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.61166,
    "c": 0.11787,
    "h": 242.1
  },
  "luminance": 0.23263
}

Semantic roles & 50–950 ramp

primary
#378BC4
secondary
#CCA58B
accent
#8548DF
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0B1014
muted
#7C7F83

Preview Lab

Preview with #378BC4

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

Preview Lab → · Contrast checker → · Palette generator →

#378BC4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva