#63C8DF#63C8DF

#63C8DF is a light, moderate cyan. Relative luminance 0.493; OKLCH L 78.1% C 0.099 H 214.7°. Best body text is #000000 at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#63C8DF
RGB	rgb(99, 200, 223)
HSL	hsl(191, 66%, 63%)
HSV	hsv(191, 56%, 87%)
CMYK	cmyk(55.6%, 10.3%, 0%, 12.5%)
CIE-LAB	lab(75.63, -23.04, -20.40)
CIE-LCH	lch(75.63, 30.77, 221.52°)
OKLab	oklab(78.09% -0.0817 -0.0565)
OKLCH	oklch(78.09% 0.099 214.7)
XYZ	xyz(39.1139, 49.2852, 77.2495)
Luminance	0.4929 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C8DF #DF7A63

analogous

#63DFB8 #63C8DF #638ADF

triadic

#63C8DF #DF63C8 #C8DF63

tetradic

#63C8DF #B863DF #DF7A63 #8ADF63

square

#63C8DF #B863DF #DF7A63 #8ADF63

split-complementary

#63C8DF #DF638A #DFB863

monochromatic

#228DA6 #30B6D5 #63C8DF #96DAE9 #C9ECF4

Accessibility & contrast

On white

1.93

#63C8DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.86

#63C8DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C8DF

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C8DF	#FFFFFF	#000000	##000000
##63C8DF	1.00	1.93	10.86	10.86
#FFFFFF	1.93	1.00	21.00	21.00
#000000	10.86	21.00	1.00	1.00
##000000	10.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C2E0

Deuteranopia (green-blind)

#A5B4DF

Tritanopia (blue-blind)

#00D1CF

Achromatopsia (no color)

#BABABA

Design tokens & code

CSS

--color: #63c8df;
/* rgb */ color: rgb(99, 200, 223);
/* oklch */ color: oklch(78.1% 0.099 214.7);

Tailwind

colors: {
  custom: {
    50: '#99d9e9',
    500: '#63c8df',
    950: '#000000',
  },
}

SCSS

$custom: #63c8df;
$custom-light: #99d9e9;
$custom-dark: #000000;

JSON

{
  "hex": "#63c8df",
  "rgb": {
    "r": 99,
    "g": 200,
    "b": 223
  },
  "hsl": {
    "h": 191.129,
    "s": 65.957,
    "l": 63.137
  },
  "oklch": {
    "l": 0.78086,
    "c": 0.09931,
    "h": 214.7
  },
  "luminance": 0.49289
}

Semantic roles & 50–950 ramp

primary

#63C8DF

secondary

#E5C1B9

accent

#3918CE

background

#FAFDFE

surface

#F3FAFC

border

#CDD3D5

text

#0F1416

muted

#7F8384

Preview Lab

Preview with #63C8DF

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

Preview Lab → · Contrast checker → · Palette generator →