#3780C5#3780C5

#3780C5 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.7% C 0.128 H 249.9°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX#3780C5
RGBrgb(55, 128, 197)
HSLhsl(209, 56%, 49%)
HSVhsv(209, 72%, 77%)
CMYKcmyk(72.1%, 35%, 0%, 22.7%)
CIE-LABlab(52.15, 0.48, -42.46)
CIE-LCHlch(52.15, 42.46, 270.64°)
OKLaboklab(58.67% -0.0442 -0.1206)
OKLCHoklch(58.67% 0.128 249.9)
XYZxyz(19.3690, 20.2796, 55.7061)
Luminance0.2028 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3780C5 #C57C37
analogous
#37C5C3 #3780C5 #3739C5
triadic
#3780C5 #C53780 #80C537
tetradic
#3780C5 #C337C5 #C57C37 #39C537
square
#3780C5 #C337C5 #C57C37 #39C537
split-complementary
#3780C5 #C53739 #C5C337
monochromatic
#1C4265 #2A6195 #3780C5 #659ED4 #95BCE1

Accessibility & contrast

On white

4.15
#3780C5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.06
#3780C5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780C5
5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3780C5#FFFFFF#000000##000000
##3780C51.004.155.065.06
#FFFFFF4.151.0021.0021.00
#0000005.0621.001.001.00
##0000005.0621.001.001.00

Color blindness preview

Protanopia (red-blind)
#6184C8
Deuteranopia (green-blind)
#4C76C4
Tritanopia (blue-blind)
#009099
Achromatopsia (no color)
#7C7C7C

Design tokens & code

CSS
--color: #3780c5;
/* rgb */ color: rgb(55, 128, 197);
/* oklch */ color: oklch(58.7% 0.128 249.9);
Tailwind
colors: {
  custom: {
    50: '#7fa4d7',
    500: '#3780c5',
    950: '#000000',
  },
}
SCSS
$custom: #3780c5;
$custom-light: #7fa4d7;
$custom-dark: #000000;
JSON
{
  "hex": "#3780c5",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 197
  },
  "hsl": {
    "h": 209.155,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5867,
    "c": 0.12847,
    "h": 249.9
  },
  "luminance": 0.20282
}

Semantic roles & 50–950 ramp

primary
#3780C5
secondary
#CDAB8B
accent
#9248E0
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0B0F14
muted
#7C7F83

Preview Lab

Preview with #3780C5

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

Preview Lab → · Contrast checker → · Palette generator →

#3780C5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva