#3F78DA#3F78DA

#3F78DA is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.162 H 260.5°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX#3F78DA
RGBrgb(63, 120, 218)
HSLhsl(218, 68%, 55%)
HSVhsv(218, 71%, 85%)
CMYKcmyk(71.1%, 45%, 0%, 14.5%)
CIE-LABlab(51.32, 14.07, -55.68)
CIE-LCHlch(51.32, 57.43, 284.18°)
OKLaboklab(58.48% -0.0268 -0.1594)
OKLCHoklch(58.48% 0.162 260.5)
XYZxyz(21.4167, 19.5494, 68.9608)
Luminance0.1955 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F78DA #DAA13F
analogous
#3FC6DA #3F78DA #533FDA
triadic
#3F78DA #DA3F78 #78DA3F
tetradic
#3F78DA #DA3FC6 #DAA13F #3FDA53
square
#3F78DA #DA3FC6 #DAA13F #3FDA53
split-complementary
#3F78DA #DA533F #C6DA3F
monochromatic
#1A4185 #245AB8 #3F78DA #729CE4 #A6C0EE

Accessibility & contrast

On white

4.28
#3F78DA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.91
#3F78DA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F78DA
4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F78DA#FFFFFF#000000##000000
##3F78DA1.004.284.914.91
#FFFFFF4.281.0021.0021.00
#0000004.9121.001.001.00
##0000004.9121.001.001.00

Color blindness preview

Protanopia (red-blind)
#4682DE
Deuteranopia (green-blind)
#2774D8
Tritanopia (blue-blind)
#008F9E
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3f78da;
/* rgb */ color: rgb(63, 120, 218);
/* oklch */ color: oklch(58.5% 0.162 260.5);
Tailwind
colors: {
  custom: {
    50: '#869ee6',
    500: '#3f78da',
    950: '#000000',
  },
}
SCSS
$custom: #3f78da;
$custom-light: #869ee6;
$custom-dark: #000000;
JSON
{
  "hex": "#3f78da",
  "rgb": {
    "r": 63,
    "g": 120,
    "b": 218
  },
  "hsl": {
    "h": 217.935,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58483,
    "c": 0.16168,
    "h": 260.5
  },
  "luminance": 0.19552
}

Semantic roles & 50–950 ramp

primary
#3F78DA
secondary
#DBC39A
accent
#AB3DEB
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0D0E16
muted
#7D7E84

Preview Lab

Preview with #3F78DA

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

Preview Lab → · Contrast checker → · Palette generator →

#3F78DA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva