#63ADEF#63ADEF

#63ADEF is a light, vivid cyan. Relative luminance 0.388; OKLCH L 72.7% C 0.122 H 247.3°. Best body text is #000000 at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#63ADEF
RGB	rgb(99, 173, 239)
HSL	hsl(208, 81%, 66%)
HSV	hsv(208, 59%, 94%)
CMYK	cmyk(58.6%, 27.6%, 0%, 6.3%)
CIE-LAB	lab(68.58, -3.95, -39.93)
CIE-LCH	lch(68.58, 40.13, 264.35°)
OKLab	oklab(72.69% -0.0471 -0.1123)
OKLCH	oklch(72.69% 0.122 247.3)
XYZ	xyz(35.6635, 38.7685, 87.2483)
Luminance	0.3877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63ADEF #EFA563

analogous

#63EFEB #63ADEF #6367EF

triadic

#63ADEF #EF63AD #ADEF63

tetradic

#63ADEF #EB63EF #EFA563 #67EF63

square

#63ADEF #EB63EF #EFA563 #67EF63

split-complementary

#63ADEF #EF6367 #EFEB63

monochromatic

#1471C4 #2B90E9 #63ADEF #9BCAF5 #D2E7FA

Accessibility & contrast

On white

2.40

#63ADEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.75

#63ADEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63ADEF

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63ADEF	#FFFFFF	#000000	##000000
##63ADEF	1.00	2.40	8.75	8.75
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.75	21.00	1.00	1.00
##000000	8.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91AFF2

Deuteranopia (green-blind)

#7EA1EE

Tritanopia (blue-blind)

#00BDC4

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #63adef;
/* rgb */ color: rgb(99, 173, 239);
/* oklch */ color: oklch(72.7% 0.122 247.3);

Tailwind

colors: {
  custom: {
    50: '#9ac5f4',
    500: '#63adef',
    950: '#000000',
  },
}

SCSS

$custom: #63adef;
$custom-light: #9ac5f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63adef",
  "rgb": {
    "r": 99,
    "g": 173,
    "b": 239
  },
  "hsl": {
    "h": 208.286,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.72686,
    "c": 0.12178,
    "h": 247.3
  },
  "luminance": 0.38772
}

Semantic roles & 50–950 ramp

primary

#63ADEF

secondary

#EED6C0

accent

#6D08DE

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #63ADEF

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

Preview Lab → · Contrast checker → · Palette generator →