#63ACE5#63ACE5

#63ACE5 is a light, moderate cyan. Relative luminance 0.378; OKLCH L 72.0% C 0.111 H 243.8°. Best body text is #000000 at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#63ACE5
RGB	rgb(99, 172, 229)
HSL	hsl(206, 71%, 64%)
HSV	hsv(206, 57%, 90%)
CMYK	cmyk(56.8%, 24.9%, 0%, 10.2%)
CIE-LAB	lab(67.88, -6.50, -35.56)
CIE-LCH	lch(67.88, 36.15, 259.64°)
OKLab	oklab(71.99% -0.0491 -0.0997)
OKLCH	oklch(71.99% 0.111 243.8)
XYZ	xyz(34.0358, 37.8118, 79.6183)
Luminance	0.3781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63ACE5 #E59C63

analogous

#63E5DD #63ACE5 #636BE5

triadic

#63ACE5 #E563AC #ACE563

tetradic

#63ACE5 #DD63E5 #E59C63 #6BE563

square

#63ACE5 #DD63E5 #E59C63 #6BE563

split-complementary

#63ACE5 #E5636B #E5DD63

monochromatic

#1D70B0 #2F90DC #63ACE5 #97C8EE #CCE4F6

Accessibility & contrast

On white

2.45

#63ACE5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.56

#63ACE5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63ACE5

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63ACE5	#FFFFFF	#000000	##000000
##63ACE5	1.00	2.45	8.56	8.56
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.56	21.00	1.00	1.00
##000000	8.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93ADE8

Deuteranopia (green-blind)

#82A0E4

Tritanopia (blue-blind)

#00BABF

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #63ace5;
/* rgb */ color: rgb(99, 172, 229);
/* oklch */ color: oklch(72.0% 0.111 243.8);

Tailwind

colors: {
  custom: {
    50: '#99c4ed',
    500: '#63ace5',
    950: '#000000',
  },
}

SCSS

$custom: #63ace5;
$custom-light: #99c4ed;
$custom-dark: #000000;

JSON

{
  "hex": "#63ace5",
  "rgb": {
    "r": 99,
    "g": 172,
    "b": 229
  },
  "hsl": {
    "h": 206.308,
    "s": 71.429,
    "l": 64.314
  },
  "oklch": {
    "l": 0.71994,
    "c": 0.11113,
    "h": 243.8
  },
  "luminance": 0.37815
}

Semantic roles & 50–950 ramp

primary

#63ACE5

secondary

#E8CFBB

accent

#6712D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #63ACE5

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

Preview Lab → · Contrast checker → · Palette generator →