#63D0EF#63D0EF

#63D0EF is a light, moderate cyan. Relative luminance 0.540; OKLCH L 80.5% C 0.109 H 219.2°. Best body text is #000000 at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#63D0EF
RGB	rgb(99, 208, 239)
HSL	hsl(193, 81%, 66%)
HSV	hsv(193, 59%, 94%)
CMYK	cmyk(58.6%, 13%, 0%, 6.3%)
CIE-LAB	lab(78.46, -22.49, -24.69)
CIE-LCH	lch(78.46, 33.40, 227.67°)
OKLab	oklab(80.53% -0.0841 -0.0686)
OKLCH	oklch(80.53% 0.109 219.2)
XYZ	xyz(43.2753, 53.9921, 89.7855)
Luminance	0.5400 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63D0EF #EF8263

analogous

#63EFC8 #63D0EF #638AEF

triadic

#63D0EF #EF63D0 #D0EF63

tetradic

#63D0EF #C863EF #EF8263 #8AEF63

square

#63D0EF #C863EF #EF8263 #8AEF63

split-complementary

#63D0EF #EF638A #EFC863

monochromatic

#149DC4 #2BBFE9 #63D0EF #9BE1F5 #D2F1FA

Accessibility & contrast

On white

1.78

#63D0EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.80

#63D0EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63D0EF

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63D0EF	#FFFFFF	#000000	##000000
##63D0EF	1.00	1.78	11.80	11.80
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.80	21.00	1.00	1.00
##000000	11.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDCBF1

Deuteranopia (green-blind)

#A8BCEF

Tritanopia (blue-blind)

#00DBDA

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #63d0ef;
/* rgb */ color: rgb(99, 208, 239);
/* oklch */ color: oklch(80.5% 0.109 219.2);

Tailwind

colors: {
  custom: {
    50: '#9bdef4',
    500: '#63d0ef',
    950: '#000000',
  },
}

SCSS

$custom: #63d0ef;
$custom-light: #9bdef4;
$custom-dark: #000000;

JSON

{
  "hex": "#63d0ef",
  "rgb": {
    "r": 99,
    "g": 208,
    "b": 239
  },
  "hsl": {
    "h": 193.286,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.80532,
    "c": 0.10851,
    "h": 219.2
  },
  "luminance": 0.53996
}

Semantic roles & 50–950 ramp

primary

#63D0EF

secondary

#C15435

accent

#3708DE

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #63D0EF

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

Preview Lab → · Contrast checker → · Palette generator →