#63C9F3#63C9F3

#63C9F3 is a light, moderate cyan. Relative luminance 0.509; OKLCH L 79.1% C 0.112 H 227.7°. Best body text is #000000 at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#63C9F3
RGB	rgb(99, 201, 243)
HSL	hsl(198, 86%, 67%)
HSV	hsv(198, 59%, 95%)
CMYK	cmyk(59.3%, 17.3%, 0%, 4.7%)
CIE-LAB	lab(76.61, -17.75, -29.65)
CIE-LCH	lch(76.61, 34.56, 239.10°)
OKLab	oklab(79.11% -0.0753 -0.0827)
OKLCH	oklch(79.11% 0.112 227.7)
XYZ	xyz(42.2036, 50.8929, 92.3758)
Luminance	0.5090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C9F3 #F38D63

analogous

#63F3D5 #63C9F3 #6381F3

triadic

#63C9F3 #F363C9 #C9F363

tetradic

#63C9F3 #D563F3 #F38D63 #81F363

square

#63C9F3 #D563F3 #F38D63 #81F363

split-complementary

#63C9F3 #F36381 #F3D563

monochromatic

#1095CC #2AB5EF #63C9F3 #9CDDF7 #D5F0FC

Accessibility & contrast

On white

1.88

#63C9F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.18

#63C9F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C9F3

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C9F3	#FFFFFF	#000000	##000000
##63C9F3	1.00	1.88	11.18	11.18
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.18	21.00	1.00	1.00
##000000	11.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C6F5

Deuteranopia (green-blind)

#9EB6F2

Tritanopia (blue-blind)

#00D5D7

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #63c9f3;
/* rgb */ color: rgb(99, 201, 243);
/* oklch */ color: oklch(79.1% 0.112 227.7);

Tailwind

colors: {
  custom: {
    50: '#9bd9f7',
    500: '#63c9f3',
    950: '#000000',
  },
}

SCSS

$custom: #63c9f3;
$custom-light: #9bd9f7;
$custom-dark: #000000;

JSON

{
  "hex": "#63c9f3",
  "rgb": {
    "r": 99,
    "g": 201,
    "b": 243
  },
  "hsl": {
    "h": 197.5,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.79106,
    "c": 0.11182,
    "h": 227.7
  },
  "luminance": 0.50897
}

Semantic roles & 50–950 ramp

primary

#63C9F3

secondary

#C85E32

accent

#4403E2

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1417

muted

#808385

Preview Lab

Preview with #63C9F3

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

Preview Lab → · Contrast checker → · Palette generator →