#3F91D0#3F91D0

#3F91D0 is a light, vivid cyan. Relative luminance 0.259; OKLCH L 63.4% C 0.124 H 244.9°. Best body text is #000000 at 6.17:1 contrast (WCAG AA passes).

Color values

HEX#3F91D0
RGBrgb(63, 145, 208)
HSLhsl(206, 61%, 53%)
HSVhsv(206, 70%, 82%)
CMYKcmyk(69.7%, 30.3%, 0%, 18.4%)
CIE-LABlab(57.90, -4.48, -39.60)
CIE-LCHlch(57.90, 39.85, 263.55°)
OKLaboklab(63.44% -0.0525 -0.112)
OKLCHoklch(63.44% 0.124 244.9)
XYZxyz(23.5561, 25.8591, 63.4121)
Luminance0.2586 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F91D0 #D07E3F
analogous
#3FD0C6 #3F91D0 #3F48D0
triadic
#3F91D0 #D03F91 #91D03F
tetradic
#3F91D0 #C63FD0 #D07E3F #48D03F
square
#3F91D0 #C63FD0 #D07E3F #48D03F
split-complementary
#3F91D0 #D03F48 #D0C63F
monochromatic
#1D5077 #2971A9 #3F91D0 #70ADDC #A1C9E8

Accessibility & contrast

On white

3.40
#3F91D0 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.17
#3F91D0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91D0
6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F91D0#FFFFFF#000000##000000
##3F91D01.003.406.176.17
#FFFFFF3.401.0021.0021.00
#0000006.1721.001.001.00
##0000006.1721.001.001.00

Color blindness preview

Protanopia (red-blind)
#7593D3
Deuteranopia (green-blind)
#6085CF
Tritanopia (blue-blind)
#00A0A7
Achromatopsia (no color)
#8B8B8B

Design tokens & code

CSS
--color: #3f91d0;
/* rgb */ color: rgb(63, 145, 208);
/* oklch */ color: oklch(63.4% 0.124 244.9);
Tailwind
colors: {
  custom: {
    50: '#85b1de',
    500: '#3f91d0',
    950: '#000000',
  },
}
SCSS
$custom: #3f91d0;
$custom-light: #85b1de;
$custom-dark: #000000;
JSON
{
  "hex": "#3f91d0",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 208
  },
  "hsl": {
    "h": 206.069,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.63444,
    "c": 0.12372,
    "h": 244.9
  },
  "luminance": 0.25862
}

Semantic roles & 50–950 ramp

primary
#3F91D0
secondary
#D5B196
accent
#8944E4
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3F91D0

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

Preview Lab → · Contrast checker → · Palette generator →

#3F91D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva