#63BCDF#63BCDF

#63BCDF is a light, moderate cyan. Relative luminance 0.439; OKLCH L 75.3% C 0.099 H 226.1°. Best body text is #000000 at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#63BCDF
RGB	rgb(99, 188, 223)
HSL	hsl(197, 66%, 63%)
HSV	hsv(197, 56%, 87%)
CMYK	cmyk(55.6%, 15.7%, 0%, 12.5%)
CIE-LAB	lab(72.19, -16.89, -25.64)
CIE-LCH	lch(72.19, 30.70, 236.62°)
OKLab	oklab(75.34% -0.0686 -0.0713)
OKLCH	oklch(75.34% 0.099 226.1)
XYZ	xyz(36.4430, 43.9435, 76.3592)
Luminance	0.4395 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BCDF #DF8663

analogous

#63DFC4 #63BCDF #637EDF

triadic

#63BCDF #DF63BC #BCDF63

tetradic

#63BCDF #C463DF #DF8663 #7EDF63

square

#63BCDF #C463DF #DF8663 #7EDF63

split-complementary

#63BCDF #DF637E #DFC463

monochromatic

#2280A6 #30A6D5 #63BCDF #96D2E9 #C9E8F4

Accessibility & contrast

On white

2.15

#63BCDF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.79

#63BCDF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BCDF

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BCDF	#FFFFFF	#000000	##000000
##63BCDF	1.00	2.15	9.79	9.79
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.79	21.00	1.00	1.00
##000000	9.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B9E1

Deuteranopia (green-blind)

#97ABDF

Tritanopia (blue-blind)

#00C6C7

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #63bcdf;
/* rgb */ color: rgb(99, 188, 223);
/* oklch */ color: oklch(75.3% 0.099 226.1);

Tailwind

colors: {
  custom: {
    50: '#99d0e9',
    500: '#63bcdf',
    950: '#000000',
  },
}

SCSS

$custom: #63bcdf;
$custom-light: #99d0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#63bcdf",
  "rgb": {
    "r": 99,
    "g": 188,
    "b": 223
  },
  "hsl": {
    "h": 196.935,
    "s": 65.957,
    "l": 63.137
  },
  "oklch": {
    "l": 0.75338,
    "c": 0.09895,
    "h": 226.1
  },
  "luminance": 0.43947
}

Semantic roles & 50–950 ramp

primary

#63BCDF

secondary

#E5C5B9

accent

#4B18CE

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1416

muted

#7E8284

Preview Lab

Preview with #63BCDF

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

Preview Lab → · Contrast checker → · Palette generator →