#63B2E8#63B2E8

#63B2E8 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.5% C 0.111 H 240.4°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX#63B2E8
RGBrgb(99, 178, 232)
HSLhsl(204, 74%, 65%)
HSVhsv(204, 57%, 91%)
CMYKcmyk(57.3%, 23.3%, 0%, 9%)
CIE-LABlab(69.69, -8.87, -34.39)
CIE-LCHlch(69.69, 35.51, 255.54°)
OKLaboklab(73.47% -0.0546 -0.0963)
OKLCHoklch(73.47% 0.111 240.4)
XYZxyz(35.6261, 40.3164, 82.2327)
Luminance0.4032 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#63B2E8 #E89963
analogous
#63E8DC #63B2E8 #636FE8
triadic
#63B2E8 #E863B2 #B2E863
tetradic
#63B2E8 #DC63E8 #E89963 #6FE863
square
#63B2E8 #DC63E8 #E89963 #6FE863
split-complementary
#63B2E8 #E8636F #E8DC63
monochromatic
#1B77B6 #2E98E0 #63B2E8 #98CCF0 #CEE7F8

Accessibility & contrast

On white

2.32
#63B2E8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.06
#63B2E8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2E8
9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##63B2E8#FFFFFF#000000##000000
##63B2E81.002.329.069.06
#FFFFFF2.321.0021.0021.00
#0000009.0621.001.001.00
##0000009.0621.001.001.00

Color blindness preview

Protanopia (red-blind)
#9AB2EB
Deuteranopia (green-blind)
#88A4E7
Tritanopia (blue-blind)
#00BFC4
Achromatopsia (no color)
#AAAAAA

Design tokens & code

CSS
--color: #63b2e8;
/* rgb */ color: rgb(99, 178, 232);
/* oklch */ color: oklch(73.5% 0.111 240.4);
Tailwind
colors: {
  custom: {
    50: '#99c8ef',
    500: '#63b2e8',
    950: '#000000',
  },
}
SCSS
$custom: #63b2e8;
$custom-light: #99c8ef;
$custom-dark: #000000;
JSON
{
  "hex": "#63b2e8",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 232
  },
  "hsl": {
    "h": 204.361,
    "s": 74.302,
    "l": 64.902
  },
  "oklch": {
    "l": 0.73468,
    "c": 0.11071,
    "h": 240.4
  },
  "luminance": 0.4032
}

Semantic roles & 50–950 ramp

primary
#63B2E8
secondary
#EACFBD
accent
#600FD6
background
#F9FCFE
surface
#F2F8FD
border
#CCD1D5
text
#0F1316
muted
#7E8284

Preview Lab

Preview with #63B2E8

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

Preview Lab → · Contrast checker → · Palette generator →

#63B2E8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva