#3F8FD5#3F8FD5

#3F8FD5 is a light, vivid cyan. Relative luminance 0.255; OKLCH L 63.3% C 0.131 H 248.0°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX#3F8FD5
RGBrgb(63, 143, 213)
HSLhsl(208, 64%, 54%)
HSVhsv(208, 70%, 84%)
CMYKcmyk(70.4%, 32.9%, 0%, 16.5%)
CIE-LABlab(57.56, -1.59, -42.94)
CIE-LCHlch(57.56, 42.97, 267.88°)
OKLaboklab(63.25% -0.0491 -0.1218)
OKLCHoklch(63.25% 0.131 248)
XYZxyz(23.8781, 25.5032, 66.6021)
Luminance0.2551 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F8FD5 #D5853F
analogous
#3FD5D0 #3F8FD5 #3F44D5
triadic
#3F8FD5 #D53F8F #8FD53F
tetradic
#3F8FD5 #D03FD5 #D5853F #44D53F
square
#3F8FD5 #D03FD5 #D5853F #44D53F
split-complementary
#3F8FD5 #D53F44 #D5D03F
monochromatic
#1C507E #2770B0 #3F8FD5 #71ACE0 #A3CAEB

Accessibility & contrast

On white

3.44
#3F8FD5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.10
#3F8FD5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FD5
6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F8FD5#FFFFFF#000000##000000
##3F8FD51.003.446.106.10
#FFFFFF3.441.0021.0021.00
#0000006.1021.001.001.00
##0000006.1021.001.001.00

Color blindness preview

Protanopia (red-blind)
#6F92D8
Deuteranopia (green-blind)
#5A84D4
Tritanopia (blue-blind)
#00A0A8
Achromatopsia (no color)
#8A8A8A

Design tokens & code

CSS
--color: #3f8fd5;
/* rgb */ color: rgb(63, 143, 213);
/* oklch */ color: oklch(63.3% 0.131 248.0);
Tailwind
colors: {
  custom: {
    50: '#85afe2',
    500: '#3f8fd5',
    950: '#000000',
  },
}
SCSS
$custom: #3f8fd5;
$custom-light: #85afe2;
$custom-dark: #000000;
JSON
{
  "hex": "#3f8fd5",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 213
  },
  "hsl": {
    "h": 208,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.63254,
    "c": 0.13131,
    "h": 248
  },
  "luminance": 0.25506
}

Semantic roles & 50–950 ramp

primary
#3F8FD5
secondary
#D8B698
accent
#8E41E7
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3F8FD5

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

Preview Lab → · Contrast checker → · Palette generator →

#3F8FD5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva