#3F87DB#3F87DB

#3F87DB is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.8% C 0.146 H 254.1°. Best body text is #000000 at 5.70:1 contrast (WCAG AA passes).

Color values

HEX#3F87DB
RGBrgb(63, 135, 219)
HSLhsl(212, 68%, 55%)
HSVhsv(212, 71%, 86%)
CMYKcmyk(71.2%, 38.4%, 0%, 14.1%)
CIE-LABlab(55.58, 5.26, -49.45)
CIE-LCHlch(55.58, 49.73, 276.08°)
OKLaboklab(61.8% -0.0401 -0.1409)
OKLCHoklch(61.8% 0.147 254.1)
XYZxyz(23.4953, 23.4966, 70.3011)
Luminance0.2350 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F87DB #DB933F
analogous
#3FD5DB #3F87DB #453FDB
triadic
#3F87DB #DB3F87 #87DB3F
tetradic
#3F87DB #DB3FD5 #DB933F #3FDB45
square
#3F87DB #DB3FD5 #DB933F #3FDB45
split-complementary
#3F87DB #DB453F #D5DB3F
monochromatic
#194C86 #2369BA #3F87DB #73A7E5 #A6C7EE

Accessibility & contrast

On white

3.68
#3F87DB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.70
#3F87DB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F87DB
5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F87DB#FFFFFF#000000##000000
##3F87DB1.003.685.705.70
#FFFFFF3.681.0021.0021.00
#0000005.7021.001.001.00
##0000005.7021.001.001.00

Color blindness preview

Protanopia (red-blind)
#608DDE
Deuteranopia (green-blind)
#487FD9
Tritanopia (blue-blind)
#009BA6
Achromatopsia (no color)
#858585

Design tokens & code

CSS
--color: #3f87db;
/* rgb */ color: rgb(63, 135, 219);
/* oklch */ color: oklch(61.8% 0.146 254.1);
Tailwind
colors: {
  custom: {
    50: '#86a9e6',
    500: '#3f87db',
    950: '#000000',
  },
}
SCSS
$custom: #3f87db;
$custom-light: #86a9e6;
$custom-dark: #000000;
JSON
{
  "hex": "#3f87db",
  "rgb": {
    "r": 63,
    "g": 135,
    "b": 219
  },
  "hsl": {
    "h": 212.308,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.61802,
    "c": 0.1465,
    "h": 254.1
  },
  "luminance": 0.23499
}

Semantic roles & 50–950 ramp

primary
#3F87DB
secondary
#DCBD9A
accent
#9B3DEB
background
#F8FAFE
surface
#F0F4FC
border
#CBCED5
text
#0D0F16
muted
#7D7F84

Preview Lab

Preview with #3F87DB

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

Preview Lab → · Contrast checker → · Palette generator →

#3F87DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva