#63ACE4#63ACE4

#63ACE4 is a light, moderate cyan. Relative luminance 0.378; OKLCH L 71.9% C 0.110 H 243.3°. Best body text is #000000 at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#63ACE4
RGB	rgb(99, 172, 228)
HSL	hsl(206, 70%, 64%)
HSV	hsv(206, 57%, 89%)
CMYK	cmyk(56.6%, 24.6%, 0%, 10.6%)
CIE-LAB	lab(67.84, -6.81, -35.08)
CIE-LCH	lch(67.84, 35.73, 259.02°)
OKLab	oklab(71.95% -0.0494 -0.0983)
OKLCH	oklch(71.95% 0.11 243.3)
XYZ	xyz(33.8966, 37.7561, 78.8851)
Luminance	0.3776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63ACE4 #E49B63

analogous

#63E4DC #63ACE4 #636CE4

triadic

#63ACE4 #E463AC #ACE463

tetradic

#63ACE4 #DC63E4 #E49B63 #6CE463

square

#63ACE4 #DC63E4 #E49B63 #6CE463

split-complementary

#63ACE4 #E4636C #E4DC63

monochromatic

#1E70AE #2F90DB #63ACE4 #97C8ED #CBE4F6

Accessibility & contrast

On white

2.46

#63ACE4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.55

#63ACE4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63ACE4

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63ACE4	#FFFFFF	#000000	##000000
##63ACE4	1.00	2.46	8.55	8.55
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.55	21.00	1.00	1.00
##000000	8.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94ADE7

Deuteranopia (green-blind)

#82A0E3

Tritanopia (blue-blind)

#00BABF

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #63ace4;
/* rgb */ color: rgb(99, 172, 228);
/* oklch */ color: oklch(71.9% 0.110 243.3);

Tailwind

colors: {
  custom: {
    50: '#99c4ec',
    500: '#63ace4',
    950: '#000000',
  },
}

SCSS

$custom: #63ace4;
$custom-light: #99c4ec;
$custom-dark: #000000;

JSON

{
  "hex": "#63ace4",
  "rgb": {
    "r": 99,
    "g": 172,
    "b": 228
  },
  "hsl": {
    "h": 206.047,
    "s": 70.492,
    "l": 64.118
  },
  "oklch": {
    "l": 0.71948,
    "c": 0.11002,
    "h": 243.3
  },
  "luminance": 0.37759
}

Semantic roles & 50–950 ramp

primary

#63ACE4

secondary

#E8CEBB

accent

#6613D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #63ACE4

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

Preview Lab → · Contrast checker → · Palette generator →