#63DDFB#63DDFB

#63DDFB is a very light, moderate cyan. Relative luminance 0.613; OKLCH L 84.0% C 0.116 H 216.6°. Best body text is #000000 at 13.27:1 contrast (WCAG AA passes).

Color values

HEX	#63DDFB
RGB	rgb(99, 221, 251)
HSL	hsl(192, 95%, 69%)
HSV	hsv(192, 61%, 98%)
CMYK	cmyk(60.6%, 12%, 0%, 1.6%)
CIE-LAB	lab(82.55, -25.50, -24.83)
CIE-LCH	lch(82.55, 35.60, 224.24°)
OKLab	oklab(83.95% -0.093 -0.069)
OKLCH	oklch(83.95% 0.116 216.6)
XYZ	xyz(48.4076, 61.3256, 100.5340)
Luminance	0.6133 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63DDFB #FB8163

analogous

#63FBCD #63DDFB #6391FB

triadic

#63DDFB #FB63DD #DDFB63

tetradic

#63DDFB #CD63FB #FB8163 #91FB63

square

#63DDFB #CD63FB #FB8163 #91FB63

split-complementary

#63DDFB #FB6391 #FBCD63

monochromatic

#06B3DE #27D0F9 #63DDFB #9FEAFD #DAF7FE

Accessibility & contrast

On white

1.58

#63DDFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.27

#63DDFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63DDFB

13.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63DDFB	#FFFFFF	#000000	##000000
##63DDFB	1.00	1.58	13.27	13.27
#FFFFFF	1.58	1.00	21.00	21.00
#000000	13.27	21.00	1.00	1.00
##000000	13.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C9D7FD

Deuteranopia (green-blind)

#B3C6FB

Tritanopia (blue-blind)

#00E8E6

Achromatopsia (no color)

#CDCDCD

Design tokens & code

CSS

--color: #63ddfb;
/* rgb */ color: rgb(99, 221, 251);
/* oklch */ color: oklch(84.0% 0.116 216.6);

Tailwind

colors: {
  custom: {
    50: '#9de7fc',
    500: '#63ddfb',
    950: '#000000',
  },
}

SCSS

$custom: #63ddfb;
$custom-light: #9de7fc;
$custom-dark: #000000;

JSON

{
  "hex": "#63ddfb",
  "rgb": {
    "r": 99,
    "g": 221,
    "b": 251
  },
  "hsl": {
    "h": 191.842,
    "s": 95,
    "l": 68.627
  },
  "oklch": {
    "l": 0.8395,
    "c": 0.11578,
    "h": 216.6
  },
  "luminance": 0.61331
}

Semantic roles & 50–950 ramp

primary

#63DDFB

secondary

#D54E2D

accent

#2D00E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #63DDFB

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

Preview Lab → · Contrast checker → · Palette generator →