#63B8F0#63B8F0

#63B8F0 is a light, moderate cyan. Relative luminance 0.432; OKLCH L 75.2% C 0.116 H 239.7°. Best body text is #000000 at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#63B8F0
RGB	rgb(99, 184, 240)
HSL	hsl(204, 82%, 66%)
HSV	hsv(204, 59%, 94%)
CMYK	cmyk(58.8%, 23.3%, 0%, 5.9%)
CIE-LAB	lab(71.70, -9.67, -35.62)
CIE-LCH	lch(71.70, 36.91, 254.81°)
OKLab	oklab(75.17% -0.0584 -0.0998)
OKLCH	oklch(75.17% 0.116 239.7)
XYZ	xyz(38.0084, 43.2213, 88.7607)
Luminance	0.4323 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B8F0 #F09B63

analogous

#63F0E2 #63B8F0 #6372F0

triadic

#63B8F0 #F063B8 #B8F063

tetradic

#63B8F0 #E263F0 #F09B63 #72F063

square

#63B8F0 #E263F0 #F09B63 #72F063

split-complementary

#63B8F0 #F06372 #F0E263

monochromatic

#137FC6 #2B9FEB #63B8F0 #9BD1F5 #D3EBFB

Accessibility & contrast

On white

2.18

#63B8F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.65

#63B8F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B8F0

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B8F0	#FFFFFF	#000000	##000000
##63B8F0	1.00	2.18	9.65	9.65
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.65	21.00	1.00	1.00
##000000	9.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB8F3

Deuteranopia (green-blind)

#8BA9EF

Tritanopia (blue-blind)

#00C6CB

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #63b8f0;
/* rgb */ color: rgb(99, 184, 240);
/* oklch */ color: oklch(75.2% 0.116 239.7);

Tailwind

colors: {
  custom: {
    50: '#9acdf5',
    500: '#63b8f0',
    950: '#000000',
  },
}

SCSS

$custom: #63b8f0;
$custom-light: #9acdf5;
$custom-dark: #000000;

JSON

{
  "hex": "#63b8f0",
  "rgb": {
    "r": 99,
    "g": 184,
    "b": 240
  },
  "hsl": {
    "h": 203.83,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.75166,
    "c": 0.11565,
    "h": 239.7
  },
  "luminance": 0.43225
}

Semantic roles & 50–950 ramp

primary

#63B8F0

secondary

#EED3C1

accent

#5D07DF

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B8F0

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

Preview Lab → · Contrast checker → · Palette generator →