#63D5EF#63D5EF

#63D5EF is a light, moderate cyan. Relative luminance 0.565; OKLCH L 81.7% C 0.109 H 215.0°. Best body text is #000000 at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#63D5EF
RGB	rgb(99, 213, 239)
HSL	hsl(191, 81%, 66%)
HSV	hsv(191, 59%, 94%)
CMYK	cmyk(58.6%, 10.9%, 0%, 6.3%)
CIE-LAB	lab(79.88, -24.99, -22.52)
CIE-LCH	lch(79.88, 33.64, 222.03°)
OKLab	oklab(81.67% -0.0893 -0.0625)
OKLCH	oklch(81.67% 0.109 215)
XYZ	xyz(44.5135, 56.4687, 90.1983)
Luminance	0.5647 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63D5EF #EF7D63

analogous

#63EFC3 #63D5EF #638FEF

triadic

#63D5EF #EF63D5 #D5EF63

tetradic

#63D5EF #C363EF #EF7D63 #8FEF63

square

#63D5EF #C363EF #EF7D63 #8FEF63

split-complementary

#63D5EF #EF638F #EFC363

monochromatic

#14A3C4 #2BC6E9 #63D5EF #9BE4F5 #D2F3FA

Accessibility & contrast

On white

1.71

#63D5EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.29

#63D5EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63D5EF

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63D5EF	#FFFFFF	#000000	##000000
##63D5EF	1.00	1.71	12.29	12.29
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.29	21.00	1.00	1.00
##000000	12.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2CFF1

Deuteranopia (green-blind)

#AEBFEF

Tritanopia (blue-blind)

#00DFDD

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #63d5ef;
/* rgb */ color: rgb(99, 213, 239);
/* oklch */ color: oklch(81.7% 0.109 215.0);

Tailwind

colors: {
  custom: {
    50: '#9ce2f4',
    500: '#63d5ef',
    950: '#000000',
  },
}

SCSS

$custom: #63d5ef;
$custom-light: #9ce2f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63d5ef",
  "rgb": {
    "r": 99,
    "g": 213,
    "b": 239
  },
  "hsl": {
    "h": 191.143,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.81672,
    "c": 0.10898,
    "h": 215
  },
  "luminance": 0.56473
}

Semantic roles & 50–950 ramp

primary

#63D5EF

secondary

#C14F35

accent

#2F08DE

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #63D5EF

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

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