#63B8FF#63B8FF

#63B8FF is a light, vivid cyan. Relative luminance 0.442; OKLCH L 75.9% C 0.132 H 245.9°. Best body text is #000000 at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#63B8FF
RGB	rgb(99, 184, 255)
HSL	hsl(207, 100%, 69%)
HSV	hsv(207, 61%, 100%)
CMYK	cmyk(61.2%, 27.8%, 0%, 0%)
CIE-LAB	lab(72.33, -5.01, -42.75)
CIE-LCH	lch(72.33, 43.04, 263.32°)
OKLab	oklab(75.86% -0.0538 -0.1204)
OKLCH	oklch(75.86% 0.132 245.9)
XYZ	xyz(40.3294, 44.1497, 100.9848)
Luminance	0.4415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B8FF #FFAA63

analogous

#63FFF8 #63B8FF #636AFF

triadic

#63B8FF #FF63B8 #B8FF63

tetradic

#63B8FF #F863FF #FFAA63 #6AFF63

square

#63B8FF #F863FF #FFAA63 #6AFF63

split-complementary

#63B8FF #FF636A #FFF863

monochromatic

#007EE8 #269CFF #63B8FF #A0D4FF #DDF0FF

Accessibility & contrast

On white

2.14

#63B8FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.83

#63B8FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B8FF

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B8FF	#FFFFFF	#000000	##000000
##63B8FF	1.00	2.14	9.83	9.83
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.83	21.00	1.00	1.00
##000000	9.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99BAFF

Deuteranopia (green-blind)

#84ABFE

Tritanopia (blue-blind)

#00C9D1

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #63b8ff;
/* rgb */ color: rgb(99, 184, 255);
/* oklch */ color: oklch(75.9% 0.132 245.9);

Tailwind

colors: {
  custom: {
    50: '#9ccdff',
    500: '#63b8ff',
    950: '#000000',
  },
}

SCSS

$custom: #63b8ff;
$custom-light: #9ccdff;
$custom-dark: #000000;

JSON

{
  "hex": "#63b8ff",
  "rgb": {
    "r": 99,
    "g": 184,
    "b": 255
  },
  "hsl": {
    "h": 207.308,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.75864,
    "c": 0.13186,
    "h": 245.9
  },
  "luminance": 0.44154
}

Semantic roles & 50–950 ramp

primary

#63B8FF

secondary

#F5DDC8

accent

#6800E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1318

muted

#7F8286

Preview Lab

Preview with #63B8FF

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

Preview Lab → · Contrast checker → · Palette generator →