#3778DF#3778DF

#3778DF is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.171 H 259.4°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX#3778DF
RGBrgb(55, 120, 223)
HSLhsl(217, 72%, 55%)
HSVhsv(217, 75%, 87%)
CMYKcmyk(75.3%, 46.2%, 0%, 12.5%)
CIE-LABlab(51.35, 14.86, -58.48)
CIE-LCHlch(51.35, 60.34, 284.26°)
OKLaboklab(58.52% -0.0315 -0.1678)
OKLCHoklch(58.52% 0.171 259.4)
XYZxyz(21.6065, 19.5704, 72.4365)
Luminance0.1957 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3778DF #DF9E37
analogous
#37CCDF #3778DF #4A37DF
triadic
#3778DF #DF3778 #78DF37
tetradic
#3778DF #DF37CC #DF9E37 #37DF4A
square
#3778DF #DF37CC #DF9E37 #37DF4A
split-complementary
#3778DF #DF4A37 #CCDF37
monochromatic
#154186 #1E5BBB #3778DF #6C9CE7 #A1BFF0

Accessibility & contrast

On white

4.27
#3778DF on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.91
#3778DF on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778DF
4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3778DF#FFFFFF#000000##000000
##3778DF1.004.274.914.91
#FFFFFF4.271.0021.0021.00
#0000004.9121.001.001.00
##0000004.9121.001.001.00

Color blindness preview

Protanopia (red-blind)
#4183E3
Deuteranopia (green-blind)
#1573DD
Tritanopia (blue-blind)
#0090A1
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3778df;
/* rgb */ color: rgb(55, 120, 223);
/* oklch */ color: oklch(58.5% 0.171 259.4);
Tailwind
colors: {
  custom: {
    50: '#849eea',
    500: '#3778df',
    950: '#000000',
  },
}
SCSS
$custom: #3778df;
$custom-light: #849eea;
$custom-dark: #000000;
JSON
{
  "hex": "#3778df",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 223
  },
  "hsl": {
    "h": 216.786,
    "s": 72.414,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58522,
    "c": 0.17073,
    "h": 259.4
  },
  "luminance": 0.19573
}

Semantic roles & 50–950 ramp

primary
#3778DF
secondary
#DCC195
accent
#A939EF
background
#F8F9FE
surface
#F0F2FD
border
#CBCCD5
text
#0D0E16
muted
#7D7E84

Preview Lab

Preview with #3778DF

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

Preview Lab → · Contrast checker → · Palette generator →

#3778DF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva