#63D0E9#63D0E9

#63D0E9 is a light, moderate cyan. Relative luminance 0.536; OKLCH L 80.3% C 0.105 H 215.0°. Best body text is #000000 at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#63D0E9
RGB	rgb(99, 208, 233)
HSL	hsl(191, 75%, 65%)
HSV	hsv(191, 58%, 91%)
CMYK	cmyk(57.5%, 10.7%, 0%, 8.6%)
CIE-LAB	lab(78.25, -24.21, -21.79)
CIE-LCH	lch(78.25, 32.57, 221.99°)
OKLab	oklab(80.3% -0.0863 -0.0604)
OKLCH	oklch(80.3% 0.105 215)
XYZ	xyz(42.4035, 53.6434, 85.1946)
Luminance	0.5365 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63D0E9 #E97C63

analogous

#63E9BF #63D0E9 #638DE9

triadic

#63D0E9 #E963D0 #D0E963

tetradic

#63D0E9 #BF63E9 #E97C63 #8DE963

square

#63D0E9 #BF63E9 #E97C63 #8DE963

split-complementary

#63D0E9 #E9638D #E9BF63

monochromatic

#1A9AB8 #2DC0E1 #63D0E9 #99E0F1 #CEF0F8

Accessibility & contrast

On white

1.79

#63D0E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.73

#63D0E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63D0E9

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63D0E9	#FFFFFF	#000000	##000000
##63D0E9	1.00	1.79	11.73	11.73
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.73	21.00	1.00	1.00
##000000	11.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BECAEA

Deuteranopia (green-blind)

#AABBE9

Tritanopia (blue-blind)

#00DAD8

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #63d0e9;
/* rgb */ color: rgb(99, 208, 233);
/* oklch */ color: oklch(80.3% 0.105 215.0);

Tailwind

colors: {
  custom: {
    50: '#9bdef0',
    500: '#63d0e9',
    950: '#000000',
  },
}

SCSS

$custom: #63d0e9;
$custom-light: #9bdef0;
$custom-dark: #000000;

JSON

{
  "hex": "#63d0e9",
  "rgb": {
    "r": 99,
    "g": 208,
    "b": 233
  },
  "hsl": {
    "h": 191.194,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.80301,
    "c": 0.10539,
    "h": 215
  },
  "luminance": 0.53648
}

Semantic roles & 50–950 ramp

primary

#63D0E9

secondary

#B75039

accent

#340ED7

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #63D0E9

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

Preview Lab → · Contrast checker → · Palette generator →