#3777DF#3777DF

#3777DF is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.3% C 0.172 H 259.7°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX#3777DF
RGBrgb(55, 119, 223)
HSLhsl(217, 72%, 55%)
HSVhsv(217, 75%, 87%)
CMYKcmyk(75.3%, 46.6%, 0%, 12.5%)
CIE-LABlab(51.07, 15.48, -58.92)
CIE-LCHlch(51.07, 60.92, 284.72°)
OKLaboklab(58.31% -0.0307 -0.1691)
OKLCHoklch(58.31% 0.172 259.7)
XYZxyz(21.4868, 19.3311, 72.3966)
Luminance0.1933 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3777DF #DF9F37
analogous
#37CBDF #3777DF #4B37DF
triadic
#3777DF #DF3777 #77DF37
tetradic
#3777DF #DF37CB #DF9F37 #37DF4B
square
#3777DF #DF37CB #DF9F37 #37DF4B
split-complementary
#3777DF #DF4B37 #CBDF37
monochromatic
#154086 #1E5ABB #3777DF #6C9BE7 #A1BFF0

Accessibility & contrast

On white

4.31
#3777DF on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.87
#3777DF on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777DF
4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3777DF#FFFFFF#000000##000000
##3777DF1.004.314.874.87
#FFFFFF4.311.0021.0021.00
#0000004.8721.001.001.00
##0000004.8721.001.001.00

Color blindness preview

Protanopia (red-blind)
#3E82E3
Deuteranopia (green-blind)
#0E72DD
Tritanopia (blue-blind)
#0090A0
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3777df;
/* rgb */ color: rgb(55, 119, 223);
/* oklch */ color: oklch(58.3% 0.172 259.7);
Tailwind
colors: {
  custom: {
    50: '#849dea',
    500: '#3777df',
    950: '#000000',
  },
}
SCSS
$custom: #3777df;
$custom-light: #849dea;
$custom-dark: #000000;
JSON
{
  "hex": "#3777df",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 223
  },
  "hsl": {
    "h": 217.143,
    "s": 72.414,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58309,
    "c": 0.17188,
    "h": 259.7
  },
  "luminance": 0.19334
}

Semantic roles & 50–950 ramp

primary
#3777DF
secondary
#DCC195
accent
#AA39EF
background
#F8F9FE
surface
#F0F2FD
border
#CBCCD5
text
#0D0E16
muted
#7D7E84

Preview Lab

Preview with #3777DF

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

Preview Lab → · Contrast checker → · Palette generator →

#3777DF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva