#3FB5E4#3FB5E4

#3FB5E4 is a light, vivid cyan. Relative luminance 0.397; OKLCH L 72.7% C 0.123 H 228.9°. Best body text is #000000 at 8.94:1 contrast (WCAG AA passes).

Color values

HEX#3FB5E4
RGBrgb(63, 181, 228)
HSLhsl(197, 75%, 57%)
HSVhsv(197, 72%, 89%)
CMYKcmyk(72.4%, 20.6%, 0%, 10.6%)
CIE-LABlab(69.26, -17.59, -32.97)
CIE-LCHlch(69.26, 37.37, 241.92°)
OKLaboklab(72.75% -0.0808 -0.0925)
OKLCHoklch(72.75% 0.123 228.9)
XYZxyz(32.5717, 39.7022, 79.3304)
Luminance0.3971 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3FB5E4 #E46E3F
analogous
#3FE4C1 #3FB5E4 #3F63E4
triadic
#3FB5E4 #E43FB5 #B5E43F
tetradic
#3FB5E4 #C13FE4 #E46E3F #63E43F
square
#3FB5E4 #C13FE4 #E46E3F #63E43F
split-complementary
#3FB5E4 #E43F63 #E4C13F
monochromatic
#157094 #1C98C9 #3FB5E4 #75CAEC #AADEF3

Accessibility & contrast

On white

2.35
#3FB5E4 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.94
#3FB5E4 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB5E4
8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3FB5E4#FFFFFF#000000##000000
##3FB5E41.002.358.948.94
#FFFFFF2.351.0021.0021.00
#0000008.9421.001.001.00
##0000008.9421.001.001.00

Color blindness preview

Protanopia (red-blind)
#9DB2E6
Deuteranopia (green-blind)
#86A2E3
Tritanopia (blue-blind)
#00C2C5
Achromatopsia (no color)
#A9A9A9

Design tokens & code

CSS
--color: #3fb5e4;
/* rgb */ color: rgb(63, 181, 228);
/* oklch */ color: oklch(72.7% 0.123 228.9);
Tailwind
colors: {
  custom: {
    50: '#89cbec',
    500: '#3fb5e4',
    950: '#000000',
  },
}
SCSS
$custom: #3fb5e4;
$custom-light: #89cbec;
$custom-dark: #000000;
JSON
{
  "hex": "#3fb5e4",
  "rgb": {
    "r": 63,
    "g": 181,
    "b": 228
  },
  "hsl": {
    "h": 197.091,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.72749,
    "c": 0.12283,
    "h": 228.9
  },
  "luminance": 0.39706
}

Semantic roles & 50–950 ramp

primary
#3FB5E4
secondary
#E1B19E
accent
#6B36F2
background
#F9FCFE
surface
#F1F8FD
border
#CBD1D5
text
#0D1316
muted
#7E8284

Preview Lab

Preview with #3FB5E4

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

Preview Lab → · Contrast checker → · Palette generator →

#3FB5E4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva