#3777E0#3777E0

#3777E0 is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.4% C 0.173 H 259.9°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX#3777E0
RGBrgb(55, 119, 224)
HSLhsl(217, 73%, 55%)
HSVhsv(217, 75%, 88%)
CMYKcmyk(75.4%, 46.9%, 0%, 12.2%)
CIE-LABlab(51.13, 15.85, -59.38)
CIE-LCHlch(51.13, 61.46, 284.95°)
OKLaboklab(58.38% -0.0305 -0.1705)
OKLCHoklch(58.38% 0.173 259.9)
XYZxyz(21.6220, 19.3852, 73.1087)
Luminance0.1939 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3777E0 #E0A037
analogous
#37CCE0 #3777E0 #4C37E0
triadic
#3777E0 #E03777 #77E037
tetradic
#3777E0 #E037CC #E0A037 #37E04C
square
#3777E0 #E037CC #E0A037 #37E04C
split-complementary
#3777E0 #E04C37 #CCE037
monochromatic
#154088 #1D5ABD #3777E0 #6C9BE8 #A1BFF0

Accessibility & contrast

On white

4.31
#3777E0 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.88
#3777E0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777E0
4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3777E0#FFFFFF#000000##000000
##3777E01.004.314.884.88
#FFFFFF4.311.0021.0021.00
#0000004.8821.001.001.00
##0000004.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#3D82E4
Deuteranopia (green-blind)
#0973DE
Tritanopia (blue-blind)
#0090A1
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3777e0;
/* rgb */ color: rgb(55, 119, 224);
/* oklch */ color: oklch(58.4% 0.173 259.9);
Tailwind
colors: {
  custom: {
    50: '#859dea',
    500: '#3777e0',
    950: '#000000',
  },
}
SCSS
$custom: #3777e0;
$custom-light: #859dea;
$custom-dark: #000000;
JSON
{
  "hex": "#3777e0",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 224
  },
  "hsl": {
    "h": 217.278,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58378,
    "c": 0.17319,
    "h": 259.9
  },
  "luminance": 0.19388
}

Semantic roles & 50–950 ramp

primary
#3777E0
secondary
#DDC296
accent
#AA38F0
background
#F8F9FE
surface
#F0F2FD
border
#CBCCD5
text
#0D0E16
muted
#7D7E84

Preview Lab

Preview with #3777E0

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

Preview Lab → · Contrast checker → · Palette generator →

#3777E0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva