#63AAEF#63AAEF

#63AAEF is a light, vivid cyan. Relative luminance 0.376; OKLCH L 72.0% C 0.124 H 249.3°. Best body text is #000000 at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#63AAEF
RGB	rgb(99, 170, 239)
HSL	hsl(210, 81%, 66%)
HSV	hsv(210, 59%, 94%)
CMYK	cmyk(58.6%, 28.9%, 0%, 6.3%)
CIE-LAB	lab(67.75, -2.28, -41.24)
CIE-LCH	lch(67.75, 41.30, 266.84°)
OKLab	oklab(72.03% -0.0439 -0.1161)
OKLCH	oklch(72.03% 0.124 249.3)
XYZ	xyz(35.0947, 37.6309, 87.0587)
Luminance	0.3763 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63AAEF #EFA863

analogous

#63EFEE #63AAEF #6364EF

triadic

#63AAEF #EF63AA #AAEF63

tetradic

#63AAEF #EE63EF #EFA863 #64EF63

square

#63AAEF #EE63EF #EFA863 #64EF63

split-complementary

#63AAEF #EF6364 #EFEE63

monochromatic

#146DC4 #2B8CE9 #63AAEF #9BC8F5 #D2E6FA

Accessibility & contrast

On white

2.46

#63AAEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.53

#63AAEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63AAEF

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63AAEF	#FFFFFF	#000000	##000000
##63AAEF	1.00	2.46	8.53	8.53
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.53	21.00	1.00	1.00
##000000	8.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DADF2

Deuteranopia (green-blind)

#7A9FEE

Tritanopia (blue-blind)

#00BAC2

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #63aaef;
/* rgb */ color: rgb(99, 170, 239);
/* oklch */ color: oklch(72.0% 0.124 249.3);

Tailwind

colors: {
  custom: {
    50: '#9ac3f4',
    500: '#63aaef',
    950: '#000000',
  },
}

SCSS

$custom: #63aaef;
$custom-light: #9ac3f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63aaef",
  "rgb": {
    "r": 99,
    "g": 170,
    "b": 239
  },
  "hsl": {
    "h": 209.571,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.72029,
    "c": 0.12413,
    "h": 249.3
  },
  "luminance": 0.37634
}

Semantic roles & 50–950 ramp

primary

#63AAEF

secondary

#EED7C0

accent

#7108DE

background

#FAFBFE

surface

#F3F7FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #63AAEF

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

Preview Lab → · Contrast checker → · Palette generator →