#3F91CE#3F91CE

#3F91CE is a light, vivid cyan. Relative luminance 0.258; OKLCH L 63.3% C 0.121 H 244.0°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX#3F91CE
RGBrgb(63, 145, 206)
HSLhsl(206, 59%, 53%)
HSVhsv(206, 69%, 81%)
CMYKcmyk(69.4%, 29.6%, 0%, 19.2%)
CIE-LABlab(57.81, -5.17, -38.62)
CIE-LCHlch(57.81, 38.97, 262.38°)
OKLaboklab(63.34% -0.0531 -0.1092)
OKLCHoklch(63.34% 0.121 244)
XYZxyz(23.3116, 25.7613, 62.1244)
Luminance0.2576 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F91CE #CE7C3F
analogous
#3FCEC3 #3F91CE #3F4ACE
triadic
#3F91CE #CE3F91 #91CE3F
tetradic
#3F91CE #C33FCE #CE7C3F #4ACE3F
square
#3F91CE #C33FCE #CE7C3F #4ACE3F
split-complementary
#3F91CE #CE3F4A #CEC33F
monochromatic
#1E5075 #2A71A6 #3F91CE #70ADDA #A1C9E7

Accessibility & contrast

On white

3.41
#3F91CE on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.15
#3F91CE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91CE
6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F91CE#FFFFFF#000000##000000
##3F91CE1.003.416.156.15
#FFFFFF3.411.0021.0021.00
#0000006.1521.001.001.00
##0000006.1521.001.001.00

Color blindness preview

Protanopia (red-blind)
#7592D1
Deuteranopia (green-blind)
#6285CD
Tritanopia (blue-blind)
#00A0A6
Achromatopsia (no color)
#8B8B8B

Design tokens & code

CSS
--color: #3f91ce;
/* rgb */ color: rgb(63, 145, 206);
/* oklch */ color: oklch(63.3% 0.121 244.0);
Tailwind
colors: {
  custom: {
    50: '#84b1dd',
    500: '#3f91ce',
    950: '#000000',
  },
}
SCSS
$custom: #3f91ce;
$custom-light: #84b1dd;
$custom-dark: #000000;
JSON
{
  "hex": "#3f91ce",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 206
  },
  "hsl": {
    "h": 205.594,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.6334,
    "c": 0.12142,
    "h": 244
  },
  "luminance": 0.25764
}

Semantic roles & 50–950 ramp

primary
#3F91CE
secondary
#D3B095
accent
#8845E3
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3F91CE

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

Preview Lab → · Contrast checker → · Palette generator →

#3F91CE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva