#63C3EB#63C3EB

#63C3EB is a light, moderate cyan. Relative luminance 0.477; OKLCH L 77.4% C 0.107 H 227.8°. Best body text is #000000 at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#63C3EB
RGB	rgb(99, 195, 235)
HSL	hsl(198, 77%, 65%)
HSV	hsv(198, 58%, 92%)
CMYK	cmyk(57.9%, 17%, 0%, 7.8%)
CIE-LAB	lab(74.62, -17.01, -28.41)
CIE-LCH	lch(74.62, 33.11, 239.09°)
OKLab	oklab(77.42% -0.0718 -0.0792)
OKLCH	oklch(77.42% 0.107 227.8)
XYZ	xyz(39.6503, 47.6772, 85.6942)
Luminance	0.4768 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C3EB #EB8B63

analogous

#63EBCF #63C3EB #637FEB

triadic

#63C3EB #EB63C3 #C3EB63

tetradic

#63C3EB #CF63EB #EB8B63 #7FEB63

square

#63C3EB #CF63EB #EB8B63 #7FEB63

split-complementary

#63C3EB #EB637F #EBCF63

monochromatic

#188BBC #2DAEE4 #63C3EB #99D8F2 #CFEDF9

Accessibility & contrast

On white

1.99

#63C3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.54

#63C3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C3EB

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C3EB	#FFFFFF	#000000	##000000
##63C3EB	1.00	1.99	10.54	10.54
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.54	21.00	1.00	1.00
##000000	10.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC0ED

Deuteranopia (green-blind)

#9BB1EB

Tritanopia (blue-blind)

#00CFD0

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #63c3eb;
/* rgb */ color: rgb(99, 195, 235);
/* oklch */ color: oklch(77.4% 0.107 227.8);

Tailwind

colors: {
  custom: {
    50: '#9ad5f1',
    500: '#63c3eb',
    950: '#000000',
  },
}

SCSS

$custom: #63c3eb;
$custom-light: #9ad5f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63c3eb",
  "rgb": {
    "r": 99,
    "g": 195,
    "b": 235
  },
  "hsl": {
    "h": 197.647,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.7742,
    "c": 0.10689,
    "h": 227.8
  },
  "luminance": 0.47681
}

Semantic roles & 50–950 ramp

primary

#63C3EB

secondary

#ECCCBE

accent

#480CDA

background

#FAFDFE

surface

#F3FAFD

border

#CDD3D5

text

#0F1416

muted

#7F8384

Preview Lab

Preview with #63C3EB

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

Preview Lab → · Contrast checker → · Palette generator →