#63B6EB#63B6EB

#63B6EB is a light, moderate cyan. Relative luminance 0.421; OKLCH L 74.5% C 0.112 H 238.7°. Best body text is #000000 at 9.42:1 contrast (WCAG AA passes).

Color values

HEX#63B6EB
RGBrgb(99, 182, 235)
HSLhsl(203, 77%, 65%)
HSVhsv(203, 58%, 92%)
CMYKcmyk(57.9%, 22.6%, 0%, 7.8%)
CIE-LABlab(70.94, -10.12, -34.08)
CIE-LCHlch(70.94, 35.55, 253.47°)
OKLaboklab(74.5% -0.0579 -0.0954)
OKLCHoklch(74.5% 0.112 238.7)
XYZxyz(36.8633, 42.1033, 84.7652)
Luminance0.4211 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#63B6EB #EB9863
analogous
#63EBDC #63B6EB #6372EB
triadic
#63B6EB #EB63B6 #B6EB63
tetradic
#63B6EB #DC63EB #EB9863 #72EB63
square
#63B6EB #DC63EB #EB9863 #72EB63
split-complementary
#63B6EB #EB6372 #EBDC63
monochromatic
#187CBC #2D9DE4 #63B6EB #99CFF2 #CFE9F9

Accessibility & contrast

On white

2.23
#63B6EB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.42
#63B6EB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B6EB
9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##63B6EB#FFFFFF#000000##000000
##63B6EB1.002.239.429.42
#FFFFFF2.231.0021.0021.00
#0000009.4221.001.001.00
##0000009.4221.001.001.00

Color blindness preview

Protanopia (red-blind)
#9EB5EE
Deuteranopia (green-blind)
#8BA7EA
Tritanopia (blue-blind)
#00C3C8
Achromatopsia (no color)
#AEAEAE

Design tokens & code

CSS
--color: #63b6eb;
/* rgb */ color: rgb(99, 182, 235);
/* oklch */ color: oklch(74.5% 0.112 238.7);
Tailwind
colors: {
  custom: {
    50: '#9acbf1',
    500: '#63b6eb',
    950: '#000000',
  },
}
SCSS
$custom: #63b6eb;
$custom-light: #9acbf1;
$custom-dark: #000000;
JSON
{
  "hex": "#63b6eb",
  "rgb": {
    "r": 99,
    "g": 182,
    "b": 235
  },
  "hsl": {
    "h": 203.382,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.74496,
    "c": 0.11163,
    "h": 238.7
  },
  "luminance": 0.42107
}

Semantic roles & 50–950 ramp

primary
#63B6EB
secondary
#ECD0BE
accent
#5C0CDA
background
#FAFCFE
surface
#F3F8FD
border
#CDD1D5
text
#0F1316
muted
#7F8284

Preview Lab

Preview with #63B6EB

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

Preview Lab → · Contrast checker → · Palette generator →

#63B6EB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva