#63D3EB#63D3EB

#63D3EB is a light, moderate cyan. Relative luminance 0.552; OKLCH L 81.1% C 0.107 H 213.8°. Best body text is #000000 at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#63D3EB
RGB	rgb(99, 211, 235)
HSL	hsl(191, 77%, 65%)
HSV	hsv(191, 58%, 92%)
CMYK	cmyk(57.9%, 10.2%, 0%, 7.8%)
CIE-LAB	lab(79.18, -25.13, -21.46)
CIE-LCH	lch(79.18, 33.05, 220.49°)
OKLab	oklab(81.06% -0.0887 -0.0595)
OKLCH	oklch(81.06% 0.107 213.8)
XYZ	xyz(43.4292, 55.2351, 86.9539)
Luminance	0.5524 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63D3EB #EB7B63

analogous

#63EBBF #63D3EB #638FEB

triadic

#63D3EB #EB63D3 #D3EB63

tetradic

#63D3EB #BF63EB #EB7B63 #8FEB63

square

#63D3EB #BF63EB #EB7B63 #8FEB63

split-complementary

#63D3EB #EB638F #EBBF63

monochromatic

#189FBC #2DC4E4 #63D3EB #99E2F2 #CFF2F9

Accessibility & contrast

On white

1.74

#63D3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.05

#63D3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63D3EB

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63D3EB	#FFFFFF	#000000	##000000
##63D3EB	1.00	1.74	12.05	12.05
#FFFFFF	1.74	1.00	21.00	21.00
#000000	12.05	21.00	1.00	1.00
##000000	12.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1CDEC

Deuteranopia (green-blind)

#ADBEEB

Tritanopia (blue-blind)

#00DCDA

Achromatopsia (no color)

#C4C4C4

Design tokens & code

CSS

--color: #63d3eb;
/* rgb */ color: rgb(99, 211, 235);
/* oklch */ color: oklch(81.1% 0.107 213.8);

Tailwind

colors: {
  custom: {
    50: '#9be0f1',
    500: '#63d3eb',
    950: '#000000',
  },
}

SCSS

$custom: #63d3eb;
$custom-light: #9be0f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63d3eb",
  "rgb": {
    "r": 99,
    "g": 211,
    "b": 235
  },
  "hsl": {
    "h": 190.588,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.81064,
    "c": 0.10684,
    "h": 213.8
  },
  "luminance": 0.55239
}

Semantic roles & 50–950 ramp

primary

#63D3EB

secondary

#BB4F38

accent

#300CDA

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #63D3EB

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

Preview Lab → · Contrast checker → · Palette generator →