#63BBF4#63BBF4

#63BBF4 is a light, moderate cyan. Relative luminance 0.447; OKLCH L 76.0% C 0.118 H 239.3°. Best body text is #000000 at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#63BBF4
RGB	rgb(99, 187, 244)
HSL	hsl(204, 87%, 67%)
HSV	hsv(204, 59%, 96%)
CMYK	cmyk(59.4%, 23.4%, 0%, 4.3%)
CIE-LAB	lab(72.71, -10.06, -36.22)
CIE-LCH	lch(72.71, 37.60, 254.48°)
OKLab	oklab(76.01% -0.0603 -0.1015)
OKLCH	oklch(76.01% 0.118 239.3)
XYZ	xyz(39.2389, 44.7212, 92.1346)
Luminance	0.4472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BBF4 #F49C63

analogous

#63F4E4 #63BBF4 #6373F4

triadic

#63BBF4 #F463BB #BBF463

tetradic

#63BBF4 #E463F4 #F49C63 #73F463

square

#63BBF4 #E463F4 #F49C63 #73F463

split-complementary

#63BBF4 #F46373 #F4E463

monochromatic

#0F83CE #2AA2F0 #63BBF4 #9CD4F8 #D5EDFC

Accessibility & contrast

On white

2.11

#63BBF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.94

#63BBF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BBF4

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BBF4	#FFFFFF	#000000	##000000
##63BBF4	1.00	2.11	9.94	9.94
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.94	21.00	1.00	1.00
##000000	9.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1BBF7

Deuteranopia (green-blind)

#8DACF3

Tritanopia (blue-blind)

#00C9CE

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #63bbf4;
/* rgb */ color: rgb(99, 187, 244);
/* oklch */ color: oklch(76.0% 0.118 239.3);

Tailwind

colors: {
  custom: {
    50: '#9bcff8',
    500: '#63bbf4',
    950: '#000000',
  },
}

SCSS

$custom: #63bbf4;
$custom-light: #9bcff8;
$custom-dark: #000000;

JSON

{
  "hex": "#63bbf4",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 244
  },
  "hsl": {
    "h": 203.586,
    "s": 86.826,
    "l": 67.255
  },
  "oklch": {
    "l": 0.76014,
    "c": 0.11809,
    "h": 239.3
  },
  "luminance": 0.44725
}

Semantic roles & 50–950 ramp

primary

#63BBF4

secondary

#F0D5C3

accent

#5B02E3

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63BBF4

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

Preview Lab → · Contrast checker → · Palette generator →