#3F91DE#3F91DE

#3F91DE is a light, vivid cyan. Relative luminance 0.266; OKLCH L 64.2% C 0.140 H 249.8°. Best body text is #000000 at 6.32:1 contrast (WCAG AA passes).

Color values

HEX#3F91DE
RGBrgb(63, 145, 222)
HSLhsl(209, 71%, 56%)
HSVhsv(209, 72%, 87%)
CMYKcmyk(71.6%, 34.7%, 0%, 12.9%)
CIE-LABlab(58.58, 0.39, -46.36)
CIE-LCHlch(58.58, 46.37, 270.49°)
OKLaboklab(64.2% -0.0486 -0.1317)
OKLCHoklch(64.2% 0.14 249.8)
XYZxyz(25.3552, 26.5787, 72.8870)
Luminance0.2658 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F91DE #DE8C3F
analogous
#3FDEDC #3F91DE #3F41DE
triadic
#3F91DE #DE3F91 #91DE3F
tetradic
#3F91DE #DC3FDE #DE8C3F #41DE3F
square
#3F91DE #DC3FDE #DE8C3F #41DE3F
split-complementary
#3F91DE #DE3F41 #DEDC3F
monochromatic
#18538B #2172BF #3F91DE #73AFE7 #A7CDF0

Accessibility & contrast

On white

3.32
#3F91DE on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.32
#3F91DE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91DE
6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F91DE#FFFFFF#000000##000000
##3F91DE1.003.326.326.32
#FFFFFF3.321.0021.0021.00
#0000006.3221.001.001.00
##0000006.3221.001.001.00

Color blindness preview

Protanopia (red-blind)
#6E95E1
Deuteranopia (green-blind)
#5786DC
Tritanopia (blue-blind)
#00A3AD
Achromatopsia (no color)
#8D8D8D

Design tokens & code

CSS
--color: #3f91de;
/* rgb */ color: rgb(63, 145, 222);
/* oklch */ color: oklch(64.2% 0.140 249.8);
Tailwind
colors: {
  custom: {
    50: '#87b0e8',
    500: '#3f91de',
    950: '#000000',
  },
}
SCSS
$custom: #3f91de;
$custom-light: #87b0e8;
$custom-dark: #000000;
JSON
{
  "hex": "#3f91de",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 222
  },
  "hsl": {
    "h": 209.057,
    "s": 70.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.64201,
    "c": 0.14041,
    "h": 249.8
  },
  "luminance": 0.26581
}

Semantic roles & 50–950 ramp

primary
#3F91DE
secondary
#DDBB9B
accent
#913AED
background
#F9FAFE
surface
#F1F4FD
border
#CBCED5
text
#0D1016
muted
#7E7F84

Preview Lab

Preview with #3F91DE

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

Preview Lab → · Contrast checker → · Palette generator →

#3F91DE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva