#3F77D5#3F77D5

#3F77D5 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.156 H 260.1°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX#3F77D5
RGBrgb(63, 119, 213)
HSLhsl(218, 64%, 54%)
HSVhsv(218, 70%, 84%)
CMYKcmyk(70.4%, 44.1%, 0%, 16.5%)
CIE-LABlab(50.75, 12.89, -53.77)
CIE-LCHlch(50.75, 55.30, 283.48°)
OKLaboklab(57.94% -0.0268 -0.1539)
OKLCHoklch(57.94% 0.156 260.1)
XYZxyz(20.6526, 19.0523, 65.5269)
Luminance0.1905 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F77D5 #D59D3F
analogous
#3FC2D5 #3F77D5 #523FD5
triadic
#3F77D5 #D53F77 #77D53F
tetradic
#3F77D5 #D53FC2 #D59D3F #3FD552
square
#3F77D5 #D53FC2 #D59D3F #3FD552
split-complementary
#3F77D5 #D5523F #C2D53F
monochromatic
#1C407E #275AB0 #3F77D5 #719BE0 #A3BEEB

Accessibility & contrast

On white

4.36
#3F77D5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.81
#3F77D5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77D5
4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F77D5#FFFFFF#000000##000000
##3F77D51.004.364.814.81
#FFFFFF4.361.0021.0021.00
#0000004.8121.001.001.00
##0000004.8121.001.001.00

Color blindness preview

Protanopia (red-blind)
#4880D9
Deuteranopia (green-blind)
#2C72D3
Tritanopia (blue-blind)
#008D9B
Achromatopsia (no color)
#797979

Design tokens & code

CSS
--color: #3f77d5;
/* rgb */ color: rgb(63, 119, 213);
/* oklch */ color: oklch(57.9% 0.156 260.1);
Tailwind
colors: {
  custom: {
    50: '#859de2',
    500: '#3f77d5',
    950: '#000000',
  },
}
SCSS
$custom: #3f77d5;
$custom-light: #859de2;
$custom-dark: #000000;
JSON
{
  "hex": "#3f77d5",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 213
  },
  "hsl": {
    "h": 217.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.57944,
    "c": 0.15617,
    "h": 260.1
  },
  "luminance": 0.19055
}

Semantic roles & 50–950 ramp

primary
#3F77D5
secondary
#D8C098
accent
#A941E7
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3F77D5

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

Preview Lab → · Contrast checker → · Palette generator →

#3F77D5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva