#63CBEF#63CBEF

#63CBEF is a light, moderate cyan. Relative luminance 0.516; OKLCH L 79.4% C 0.109 H 223.5°. Best body text is #000000 at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#63CBEF
RGB	rgb(99, 203, 239)
HSL	hsl(195, 81%, 66%)
HSV	hsv(195, 59%, 94%)
CMYK	cmyk(58.6%, 15.1%, 0%, 6.3%)
CIE-LAB	lab(77.04, -19.95, -26.86)
CIE-LCH	lch(77.04, 33.46, 233.39°)
OKLab	oklab(79.4% -0.0788 -0.0747)
OKLCH	oklch(79.4% 0.109 223.5)
XYZ	xyz(42.0754, 51.5924, 89.3856)
Luminance	0.5160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63CBEF #EF8763

analogous

#63EFCD #63CBEF #6385EF

triadic

#63CBEF #EF63CB #CBEF63

tetradic

#63CBEF #CD63EF #EF8763 #85EF63

square

#63CBEF #CD63EF #EF8763 #85EF63

split-complementary

#63CBEF #EF6385 #EFCD63

monochromatic

#1496C4 #2BB8E9 #63CBEF #9BDEF5 #D2F0FA

Accessibility & contrast

On white

1.86

#63CBEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.32

#63CBEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63CBEF

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63CBEF	#FFFFFF	#000000	##000000
##63CBEF	1.00	1.86	11.32	11.32
#FFFFFF	1.86	1.00	21.00	21.00
#000000	11.32	21.00	1.00	1.00
##000000	11.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C7F1

Deuteranopia (green-blind)

#A2B8EF

Tritanopia (blue-blind)

#00D6D6

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #63cbef;
/* rgb */ color: rgb(99, 203, 239);
/* oklch */ color: oklch(79.4% 0.109 223.5);

Tailwind

colors: {
  custom: {
    50: '#9bdbf4',
    500: '#63cbef',
    950: '#000000',
  },
}

SCSS

$custom: #63cbef;
$custom-light: #9bdbf4;
$custom-dark: #000000;

JSON

{
  "hex": "#63cbef",
  "rgb": {
    "r": 99,
    "g": 203,
    "b": 239
  },
  "hsl": {
    "h": 195.429,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.79396,
    "c": 0.10863,
    "h": 223.5
  },
  "luminance": 0.51597
}

Semantic roles & 50–950 ramp

primary

#63CBEF

secondary

#C15935

accent

#3F08DE

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #63CBEF

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

Preview Lab → · Contrast checker → · Palette generator →