#63CBE5#63CBE5

#63CBE5 is a light, moderate cyan. Relative luminance 0.510; OKLCH L 79.0% C 0.103 H 216.5°. Best body text is #000000 at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#63CBE5
RGB	rgb(99, 203, 229)
HSL	hsl(192, 71%, 64%)
HSV	hsv(192, 57%, 90%)
CMYK	cmyk(56.8%, 11.4%, 0%, 10.2%)
CIE-LAB	lab(76.69, -22.85, -22.02)
CIE-LCH	lch(76.69, 31.73, 223.94°)
OKLab	oklab(79% -0.0826 -0.0611)
OKLCH	oklch(79% 0.103 216.5)
XYZ	xyz(40.6388, 51.0178, 81.8193)
Luminance	0.5102 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63CBE5 #E57D63

analogous

#63E5BE #63CBE5 #638AE5

triadic

#63CBE5 #E563CB #CBE563

tetradic

#63CBE5 #BE63E5 #E57D63 #8AE563

square

#63CBE5 #BE63E5 #E57D63 #8AE563

split-complementary

#63CBE5 #E5638A #E5BE63

monochromatic

#1D93B0 #2FBADC #63CBE5 #97DCEE #CCEEF6

Accessibility & contrast

On white

1.87

#63CBE5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.20

#63CBE5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63CBE5

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63CBE5	#FFFFFF	#000000	##000000
##63CBE5	1.00	1.87	11.20	11.20
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.20	21.00	1.00	1.00
##000000	11.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9C6E6

Deuteranopia (green-blind)

#A6B7E5

Tritanopia (blue-blind)

#00D4D3

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #63cbe5;
/* rgb */ color: rgb(99, 203, 229);
/* oklch */ color: oklch(79.0% 0.103 216.5);

Tailwind

colors: {
  custom: {
    50: '#9adbed',
    500: '#63cbe5',
    950: '#000000',
  },
}

SCSS

$custom: #63cbe5;
$custom-light: #9adbed;
$custom-dark: #000000;

JSON

{
  "hex": "#63cbe5",
  "rgb": {
    "r": 99,
    "g": 203,
    "b": 229
  },
  "hsl": {
    "h": 192,
    "s": 71.429,
    "l": 64.314
  },
  "oklch": {
    "l": 0.79003,
    "c": 0.1027,
    "h": 216.5
  },
  "luminance": 0.51022
}

Semantic roles & 50–950 ramp

primary

#63CBE5

secondary

#B1533B

accent

#3912D3

background

#FCFEFE

surface

#F5FBFD

border

#CFD4D5

text

#0F1516

muted

#808484

Preview Lab

Preview with #63CBE5

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

Preview Lab → · Contrast checker → · Palette generator →