#63DDF9#63DDF9

#63DDF9 is a very light, moderate cyan. Relative luminance 0.612; OKLCH L 83.9% C 0.115 H 215.3°. Best body text is #000000 at 13.24:1 contrast (WCAG AA passes).

Color values

HEX#63DDF9
RGBrgb(99, 221, 249)
HSLhsl(191, 93%, 68%)
HSVhsv(191, 60%, 98%)
CMYKcmyk(60.2%, 11.2%, 0%, 2.4%)
CIE-LABlab(82.49, -26.08, -23.88)
CIE-LCHlch(82.49, 35.36, 222.48°)
OKLaboklab(83.87% -0.0937 -0.0663)
OKLCHoklch(83.87% 0.115 215.3)
XYZxyz(48.0940, 61.2002, 98.8824)
Luminance0.6120 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#63DDF9 #F97F63
analogous
#63F9CA #63DDF9 #6392F9
triadic
#63DDF9 #F963DD #DDF963
tetradic
#63DDF9 #CA63F9 #F97F63 #92F963
square
#63DDF9 #CA63F9 #F97F63 #92F963
split-complementary
#63DDF9 #F96392 #F9CA63
monochromatic
#08B2D9 #28D0F7 #63DDF9 #9EEAFB #D9F7FE

Accessibility & contrast

On white

1.59
#63DDF9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

13.24
#63DDF9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63DDF9
13.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##63DDF9#FFFFFF#000000##000000
##63DDF91.001.5913.2413.24
#FFFFFF1.591.0021.0021.00
#00000013.2421.001.001.00
##00000013.2421.001.001.00

Color blindness preview

Protanopia (red-blind)
#C9D7FB
Deuteranopia (green-blind)
#B3C6F9
Tritanopia (blue-blind)
#00E8E6
Achromatopsia (no color)
#CDCDCD

Design tokens & code

CSS
--color: #63ddf9;
/* rgb */ color: rgb(99, 221, 249);
/* oklch */ color: oklch(83.9% 0.115 215.3);
Tailwind
colors: {
  custom: {
    50: '#9de7fb',
    500: '#63ddf9',
    950: '#000000',
  },
}
SCSS
$custom: #63ddf9;
$custom-light: #9de7fb;
$custom-dark: #000000;
JSON
{
  "hex": "#63ddf9",
  "rgb": {
    "r": 99,
    "g": 221,
    "b": 249
  },
  "hsl": {
    "h": 191.2,
    "s": 92.593,
    "l": 68.235
  },
  "oklch": {
    "l": 0.83874,
    "c": 0.11481,
    "h": 215.3
  },
  "luminance": 0.61205
}

Semantic roles & 50–950 ramp

primary
#63DDF9
secondary
#D24D2E
accent
#2B00E6
background
#FCFEFF
surface
#F6FCFF
border
#D0D5D7
text
#101617
muted
#808485

Preview Lab

Preview with #63DDF9

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

Preview Lab → · Contrast checker → · Palette generator →

#63DDF9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva