#378DC3#378DC3

#378DC3 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.6% C 0.115 H 240.2°. Best body text is #000000 at 5.76:1 contrast (WCAG AA passes).

Color values

HEX#378DC3
RGBrgb(55, 141, 195)
HSLhsl(203, 56%, 49%)
HSVhsv(203, 72%, 76%)
CMYKcmyk(71.8%, 27.7%, 0%, 23.5%)
CIE-LABlab(55.89, -7.84, -35.44)
CIE-LCHlch(55.89, 36.30, 257.53°)
OKLaboklab(61.58% -0.0573 -0.1001)
OKLCHoklch(61.58% 0.115 240.2)
XYZxyz(20.9469, 23.7997, 55.1090)
Luminance0.2380 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378DC3 #C36D37
analogous
#37C3B3 #378DC3 #3747C3
triadic
#378DC3 #C3378D #8DC337
tetradic
#378DC3 #B337C3 #C36D37 #47C337
square
#378DC3 #B337C3 #C36D37 #47C337
split-complementary
#378DC3 #C33747 #C3B337
monochromatic
#1C4864 #2A6A93 #378DC3 #64A8D3 #94C3E1

Accessibility & contrast

On white

3.65
#378DC3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.76
#378DC3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DC3
5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378DC3#FFFFFF#000000##000000
##378DC31.003.655.765.76
#FFFFFF3.651.0021.0021.00
#0000005.7621.001.001.00
##0000005.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#748DC5
Deuteranopia (green-blind)
#6180C2
Tritanopia (blue-blind)
#009BA0
Achromatopsia (no color)
#868686

Design tokens & code

CSS
--color: #378dc3;
/* rgb */ color: rgb(55, 141, 195);
/* oklch */ color: oklch(61.6% 0.115 240.2);
Tailwind
colors: {
  custom: {
    50: '#7faed5',
    500: '#378dc3',
    950: '#000000',
  },
}
SCSS
$custom: #378dc3;
$custom-light: #7faed5;
$custom-dark: #000000;
JSON
{
  "hex": "#378dc3",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 195
  },
  "hsl": {
    "h": 203.143,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.61584,
    "c": 0.11533,
    "h": 240.2
  },
  "luminance": 0.23802
}

Semantic roles & 50–950 ramp

primary
#378DC3
secondary
#CCA38A
accent
#8349DF
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0B1014
muted
#7C7F83

Preview Lab

Preview with #378DC3

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

Preview Lab → · Contrast checker → · Palette generator →

#378DC3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva