#63D5EE#63D5EE

#63D5EE is a light, moderate cyan. Relative luminance 0.564; OKLCH L 81.6% C 0.109 H 214.3°. Best body text is #000000 at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#63D5EE
RGB	rgb(99, 213, 238)
HSL	hsl(191, 80%, 66%)
HSV	hsv(191, 58%, 93%)
CMYK	cmyk(58.4%, 10.5%, 0%, 6.7%)
CIE-LAB	lab(79.85, -25.27, -22.04)
CIE-LCH	lch(79.85, 33.53, 221.10°)
OKLab	oklab(81.63% -0.0897 -0.0611)
OKLCH	oklch(81.63% 0.109 214.3)
XYZ	xyz(44.3662, 56.4098, 89.4224)
Luminance	0.5641 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63D5EE #EE7C63

analogous

#63EEC1 #63D5EE #638FEE

triadic

#63D5EE #EE63D5 #D5EE63

tetradic

#63D5EE #C163EE #EE7C63 #8FEE63

square

#63D5EE #C163EE #EE7C63 #8FEE63

split-complementary

#63D5EE #EE638F #EEC163

monochromatic

#15A3C2 #2CC6E8 #63D5EE #9AE4F4 #D1F3FA

Accessibility & contrast

On white

1.71

#63D5EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.28

#63D5EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63D5EE

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63D5EE	#FFFFFF	#000000	##000000
##63D5EE	1.00	1.71	12.28	12.28
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.28	21.00	1.00	1.00
##000000	12.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3CFEF

Deuteranopia (green-blind)

#AEBFEE

Tritanopia (blue-blind)

#00DFDD

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #63d5ee;
/* rgb */ color: rgb(99, 213, 238);
/* oklch */ color: oklch(81.6% 0.109 214.3);

Tailwind

colors: {
  custom: {
    50: '#9be2f3',
    500: '#63d5ee',
    950: '#000000',
  },
}

SCSS

$custom: #63d5ee;
$custom-light: #9be2f3;
$custom-dark: #000000;

JSON

{
  "hex": "#63d5ee",
  "rgb": {
    "r": 99,
    "g": 213,
    "b": 238
  },
  "hsl": {
    "h": 190.791,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.81634,
    "c": 0.10853,
    "h": 214.3
  },
  "luminance": 0.56414
}

Semantic roles & 50–950 ramp

primary

#63D5EE

secondary

#C04E36

accent

#2F09DD

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #63D5EE

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

Preview Lab → · Contrast checker → · Palette generator →