#63ACEF#63ACEF

#63ACEF is a light, vivid cyan. Relative luminance 0.384; OKLCH L 72.5% C 0.123 H 247.9°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#63ACEF
RGB	rgb(99, 172, 239)
HSL	hsl(209, 81%, 66%)
HSV	hsv(209, 59%, 94%)
CMYK	cmyk(58.6%, 28%, 0%, 6.3%)
CIE-LAB	lab(68.30, -3.39, -40.37)
CIE-LCH	lch(68.30, 40.51, 265.19°)
OKLab	oklab(72.47% -0.046 -0.1136)
OKLCH	oklch(72.47% 0.123 247.9)
XYZ	xyz(35.4724, 38.3865, 87.1846)
Luminance	0.3839 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63ACEF #EFA663

analogous

#63EFEC #63ACEF #6366EF

triadic

#63ACEF #EF63AC #ACEF63

tetradic

#63ACEF #EC63EF #EFA663 #66EF63

square

#63ACEF #EC63EF #EFA663 #66EF63

split-complementary

#63ACEF #EF6366 #EFEC63

monochromatic

#1470C4 #2B8EE9 #63ACEF #9BCAF5 #D2E7FA

Accessibility & contrast

On white

2.42

#63ACEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#63ACEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63ACEF

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63ACEF	#FFFFFF	#000000	##000000
##63ACEF	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FAEF2

Deuteranopia (green-blind)

#7DA0EE

Tritanopia (blue-blind)

#00BCC3

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #63acef;
/* rgb */ color: rgb(99, 172, 239);
/* oklch */ color: oklch(72.5% 0.123 247.9);

Tailwind

colors: {
  custom: {
    50: '#9ac4f4',
    500: '#63acef',
    950: '#000000',
  },
}

SCSS

$custom: #63acef;
$custom-light: #9ac4f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63acef",
  "rgb": {
    "r": 99,
    "g": 172,
    "b": 239
  },
  "hsl": {
    "h": 208.714,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.72467,
    "c": 0.12255,
    "h": 247.9
  },
  "luminance": 0.3839
}

Semantic roles & 50–950 ramp

primary

#63ACEF

secondary

#EED6C0

accent

#6E08DE

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #63ACEF

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

Preview Lab → · Contrast checker → · Palette generator →