#63C3EC#63C3EC

#63C3EC is a light, moderate cyan. Relative luminance 0.477; OKLCH L 77.5% C 0.108 H 228.4°. Best body text is #000000 at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#63C3EC
RGB	rgb(99, 195, 236)
HSL	hsl(198, 78%, 66%)
HSV	hsv(198, 58%, 93%)
CMYK	cmyk(58.1%, 17.4%, 0%, 7.5%)
CIE-LAB	lab(74.66, -16.71, -28.89)
CIE-LCH	lch(74.66, 33.38, 239.96°)
OKLab	oklab(77.46% -0.0715 -0.0805)
OKLCH	oklch(77.46% 0.108 228.4)
XYZ	xyz(39.7952, 47.7352, 86.4572)
Luminance	0.4774 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C3EC #EC8C63

analogous

#63ECD0 #63C3EC #637EEC

triadic

#63C3EC #EC63C3 #C3EC63

tetradic

#63C3EC #D063EC #EC8C63 #7EEC63

square

#63C3EC #D063EC #EC8C63 #7EEC63

split-complementary

#63C3EC #EC637E #ECD063

monochromatic

#178CBE #2CAEE5 #63C3EC #9AD8F3 #D0EDF9

Accessibility & contrast

On white

1.99

#63C3EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.55

#63C3EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C3EC

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C3EC	#FFFFFF	#000000	##000000
##63C3EC	1.00	1.99	10.55	10.55
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.55	21.00	1.00	1.00
##000000	10.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC0EE

Deuteranopia (green-blind)

#9AB1EB

Tritanopia (blue-blind)

#00CFD0

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #63c3ec;
/* rgb */ color: rgb(99, 195, 236);
/* oklch */ color: oklch(77.5% 0.108 228.4);

Tailwind

colors: {
  custom: {
    50: '#9ad5f2',
    500: '#63c3ec',
    950: '#000000',
  },
}

SCSS

$custom: #63c3ec;
$custom-light: #9ad5f2;
$custom-dark: #000000;

JSON

{
  "hex": "#63c3ec",
  "rgb": {
    "r": 99,
    "g": 195,
    "b": 236
  },
  "hsl": {
    "h": 197.956,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.77461,
    "c": 0.10766,
    "h": 228.4
  },
  "luminance": 0.47739
}

Semantic roles & 50–950 ramp

primary

#63C3EC

secondary

#ECCCBF

accent

#490BDB

background

#FAFDFE

surface

#F3FAFD

border

#CDD3D5

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #63C3EC

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

Preview Lab → · Contrast checker → · Palette generator →