#3780CA#3780CA

#3780CA is a mid, vivid cyan. Relative luminance 0.205; OKLCH L 59.0% C 0.135 H 251.5°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX#3780CA
RGBrgb(55, 128, 202)
HSLhsl(210, 58%, 50%)
HSVhsv(210, 73%, 79%)
CMYKcmyk(72.8%, 36.6%, 0%, 20.8%)
CIE-LABlab(52.41, 2.28, -44.89)
CIE-LCHlch(52.41, 44.95, 272.90°)
OKLaboklab(58.96% -0.0429 -0.1278)
OKLCHoklch(58.96% 0.135 251.5)
XYZxyz(19.9514, 20.5126, 58.7735)
Luminance0.2051 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3780CA #CA8137
analogous
#37CACA #3780CA #3737CA
triadic
#3780CA #CA3780 #80CA37
tetradic
#3780CA #CA37CA #CA8137 #37CA37
square
#3780CA #CA37CA #CA8137 #37CA37
split-complementary
#3780CA #CA3737 #CACA37
monochromatic
#1C436A #29629B #3780CA #679FD7 #98BDE4

Accessibility & contrast

On white

4.12
#3780CA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.10
#3780CA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780CA
5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3780CA#FFFFFF#000000##000000
##3780CA1.004.125.105.10
#FFFFFF4.121.0021.0021.00
#0000005.1021.001.001.00
##0000005.1021.001.001.00

Color blindness preview

Protanopia (red-blind)
#5E85CD
Deuteranopia (green-blind)
#4877C9
Tritanopia (blue-blind)
#00919B
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #3780ca;
/* rgb */ color: rgb(55, 128, 202);
/* oklch */ color: oklch(59.0% 0.135 251.5);
Tailwind
colors: {
  custom: {
    50: '#80a4da',
    500: '#3780ca',
    950: '#000000',
  },
}
SCSS
$custom: #3780ca;
$custom-light: #80a4da;
$custom-dark: #000000;
JSON
{
  "hex": "#3780ca",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 202
  },
  "hsl": {
    "h": 210.204,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.58959,
    "c": 0.13477,
    "h": 251.5
  },
  "luminance": 0.20515
}

Semantic roles & 50–950 ramp

primary
#3780CA
secondary
#CFAF8E
accent
#9446E1
background
#F8FAFD
surface
#F0F3FB
border
#CBCDD4
text
#0C0F15
muted
#7D7F83

Preview Lab

Preview with #3780CA

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

Preview Lab → · Contrast checker → · Palette generator →

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