#63CBE9#63CBE9

#63CBE9 is a light, moderate cyan. Relative luminance 0.512; OKLCH L 79.2% C 0.105 H 219.4°. Best body text is #000000 at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#63CBE9
RGB	rgb(99, 203, 233)
HSL	hsl(193, 75%, 65%)
HSV	hsv(193, 58%, 91%)
CMYK	cmyk(57.5%, 12.9%, 0%, 8.6%)
CIE-LAB	lab(76.83, -21.70, -23.96)
CIE-LCH	lch(76.83, 32.33, 227.84°)
OKLab	oklab(79.16% -0.0811 -0.0665)
OKLCH	oklch(79.16% 0.105 219.4)
XYZ	xyz(41.2037, 51.2437, 84.7946)
Luminance	0.5125 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63CBE9 #E98163

analogous

#63E9C4 #63CBE9 #6388E9

triadic

#63CBE9 #E963CB #CBE963

tetradic

#63CBE9 #C463E9 #E98163 #88E963

square

#63CBE9 #C463E9 #E98163 #88E963

split-complementary

#63CBE9 #E96388 #E9C463

monochromatic

#1A94B8 #2DB9E1 #63CBE9 #99DDF1 #CEEFF8

Accessibility & contrast

On white

1.87

#63CBE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.25

#63CBE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63CBE9

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63CBE9	#FFFFFF	#000000	##000000
##63CBE9	1.00	1.87	11.25	11.25
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.25	21.00	1.00	1.00
##000000	11.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C6EB

Deuteranopia (green-blind)

#A5B7E9

Tritanopia (blue-blind)

#00D5D4

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #63cbe9;
/* rgb */ color: rgb(99, 203, 233);
/* oklch */ color: oklch(79.2% 0.105 219.4);

Tailwind

colors: {
  custom: {
    50: '#9adbf0',
    500: '#63cbe9',
    950: '#000000',
  },
}

SCSS

$custom: #63cbe9;
$custom-light: #9adbf0;
$custom-dark: #000000;

JSON

{
  "hex": "#63cbe9",
  "rgb": {
    "r": 99,
    "g": 203,
    "b": 233
  },
  "hsl": {
    "h": 193.433,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.79158,
    "c": 0.10487,
    "h": 219.4
  },
  "luminance": 0.51248
}

Semantic roles & 50–950 ramp

primary

#63CBE9

secondary

#B75539

accent

#3B0ED7

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #63CBE9

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

Preview Lab → · Contrast checker → · Palette generator →