#63D1EB#63D1EB

#63D1EB is a light, moderate cyan. Relative luminance 0.543; OKLCH L 80.6% C 0.106 H 215.6°. Best body text is #000000 at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#63D1EB
RGB	rgb(99, 209, 235)
HSL	hsl(191, 77%, 65%)
HSV	hsv(191, 58%, 92%)
CMYK	cmyk(57.9%, 11.1%, 0%, 7.8%)
CIE-LAB	lab(78.61, -24.14, -22.32)
CIE-LCH	lch(78.61, 32.88, 222.76°)
OKLab	oklab(80.61% -0.0866 -0.0619)
OKLCH	oklch(80.61% 0.107 215.6)
XYZ	xyz(42.9354, 54.2475, 86.7893)
Luminance	0.5425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63D1EB #EB7D63

analogous

#63EBC1 #63D1EB #638DEB

triadic

#63D1EB #EB63D1 #D1EB63

tetradic

#63D1EB #C163EB #EB7D63 #8DEB63

square

#63D1EB #C163EB #EB7D63 #8DEB63

split-complementary

#63D1EB #EB638D #EBC163

monochromatic

#189CBC #2DC1E4 #63D1EB #99E1F2 #CFF1F9

Accessibility & contrast

On white

1.77

#63D1EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.85

#63D1EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63D1EB

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63D1EB	#FFFFFF	#000000	##000000
##63D1EB	1.00	1.77	11.85	11.85
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.85	21.00	1.00	1.00
##000000	11.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFCBEC

Deuteranopia (green-blind)

#ABBCEB

Tritanopia (blue-blind)

#00DBD9

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #63d1eb;
/* rgb */ color: rgb(99, 209, 235);
/* oklch */ color: oklch(80.6% 0.106 215.6);

Tailwind

colors: {
  custom: {
    50: '#9bdff1',
    500: '#63d1eb',
    950: '#000000',
  },
}

SCSS

$custom: #63d1eb;
$custom-light: #9bdff1;
$custom-dark: #000000;

JSON

{
  "hex": "#63d1eb",
  "rgb": {
    "r": 99,
    "g": 209,
    "b": 235
  },
  "hsl": {
    "h": 191.471,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.80606,
    "c": 0.1065,
    "h": 215.6
  },
  "luminance": 0.54252
}

Semantic roles & 50–950 ramp

primary

#63D1EB

secondary

#BB5138

accent

#330CDA

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #63D1EB

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

Preview Lab → · Contrast checker → · Palette generator →