#63BBDF#63BBDF

#63BBDF is a light, moderate cyan. Relative luminance 0.435; OKLCH L 75.1% C 0.099 H 227.0°. Best body text is #000000 at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#63BBDF
RGB	rgb(99, 187, 223)
HSL	hsl(197, 66%, 63%)
HSV	hsv(197, 56%, 87%)
CMYK	cmyk(55.6%, 16.1%, 0%, 12.5%)
CIE-LAB	lab(71.90, -16.37, -26.07)
CIE-LCH	lch(71.90, 30.79, 237.88°)
OKLab	oklab(75.11% -0.0675 -0.0725)
OKLCH	oklch(75.11% 0.099 227)
XYZ	xyz(36.2301, 43.5177, 76.2882)
Luminance	0.4352 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BBDF #DF8763

analogous

#63DFC5 #63BBDF #637DDF

triadic

#63BBDF #DF63BB #BBDF63

tetradic

#63BBDF #C563DF #DF8763 #7DDF63

square

#63BBDF #C563DF #DF8763 #7DDF63

split-complementary

#63BBDF #DF637D #DFC563

monochromatic

#227FA6 #30A5D5 #63BBDF #96D1E9 #C9E7F4

Accessibility & contrast

On white

2.16

#63BBDF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.70

#63BBDF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BBDF

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BBDF	#FFFFFF	#000000	##000000
##63BBDF	1.00	2.16	9.70	9.70
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.70	21.00	1.00	1.00
##000000	9.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B8E1

Deuteranopia (green-blind)

#96AADF

Tritanopia (blue-blind)

#00C6C7

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #63bbdf;
/* rgb */ color: rgb(99, 187, 223);
/* oklch */ color: oklch(75.1% 0.099 227.0);

Tailwind

colors: {
  custom: {
    50: '#99cfe9',
    500: '#63bbdf',
    950: '#000000',
  },
}

SCSS

$custom: #63bbdf;
$custom-light: #99cfe9;
$custom-dark: #000000;

JSON

{
  "hex": "#63bbdf",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 223
  },
  "hsl": {
    "h": 197.419,
    "s": 65.957,
    "l": 63.137
  },
  "oklch": {
    "l": 0.7511,
    "c": 0.09911,
    "h": 227
  },
  "luminance": 0.43521
}

Semantic roles & 50–950 ramp

primary

#63BBDF

secondary

#E5C6B9

accent

#4D18CE

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63BBDF

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

Preview Lab → · Contrast checker → · Palette generator →