#3F83DD#3F83DD

#3F83DD is a mid, vivid cyan. Relative luminance 0.225; OKLCH L 61.0% C 0.153 H 256.4°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX#3F83DD
RGBrgb(63, 131, 221)
HSLhsl(214, 70%, 56%)
HSVhsv(214, 71%, 87%)
CMYKcmyk(71.5%, 40.7%, 0%, 13.3%)
CIE-LABlab(54.56, 8.39, -52.19)
CIE-LCHlch(54.56, 52.86, 279.13°)
OKLaboklab(61.04% -0.036 -0.149)
OKLCHoklch(61.04% 0.153 256.4)
XYZxyz(23.2126, 22.5073, 71.5136)
Luminance0.2251 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F83DD #DD993F
analogous
#3FD2DD #3F83DD #4A3FDD
triadic
#3F83DD #DD3F83 #83DD3F
tetradic
#3F83DD #DD3FD2 #DD993F #3FDD4A
square
#3F83DD #DD3FD2 #DD993F #3FDD4A
split-complementary
#3F83DD #DD4A3F #D2DD3F
monochromatic
#184989 #2265BD #3F83DD #73A5E6 #A7C6EF

Accessibility & contrast

On white

3.82
#3F83DD on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.50
#3F83DD on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83DD
5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F83DD#FFFFFF#000000##000000
##3F83DD1.003.825.505.50
#FFFFFF3.821.0021.0021.00
#0000005.5021.001.001.00
##0000005.5021.001.001.00

Color blindness preview

Protanopia (red-blind)
#588AE1
Deuteranopia (green-blind)
#3E7CDB
Tritanopia (blue-blind)
#0098A5
Achromatopsia (no color)
#838383

Design tokens & code

CSS
--color: #3f83dd;
/* rgb */ color: rgb(63, 131, 221);
/* oklch */ color: oklch(61.0% 0.153 256.4);
Tailwind
colors: {
  custom: {
    50: '#87a6e8',
    500: '#3f83dd',
    950: '#000000',
  },
}
SCSS
$custom: #3f83dd;
$custom-light: #87a6e8;
$custom-dark: #000000;
JSON
{
  "hex": "#3f83dd",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 221
  },
  "hsl": {
    "h": 214.177,
    "s": 69.912,
    "l": 55.686
  },
  "oklch": {
    "l": 0.61044,
    "c": 0.15331,
    "h": 256.4
  },
  "luminance": 0.2251
}

Semantic roles & 50–950 ramp

primary
#3F83DD
secondary
#DDC09B
accent
#A03BED
background
#F9FAFE
surface
#F1F4FD
border
#CBCED5
text
#0D0F16
muted
#7E7F84

Preview Lab

Preview with #3F83DD

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

Preview Lab → · Contrast checker → · Palette generator →

#3F83DD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva