#63C5F0#63C5F0

#63C5F0 is a light, moderate cyan. Relative luminance 0.489; OKLCH L 78.1% C 0.110 H 229.2°. Best body text is #000000 at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#63C5F0
RGB	rgb(99, 197, 240)
HSL	hsl(198, 82%, 66%)
HSV	hsv(198, 59%, 94%)
CMYK	cmyk(58.8%, 17.9%, 0%, 5.9%)
CIE-LAB	lab(75.37, -16.56, -29.95)
CIE-LCH	lch(75.37, 34.23, 241.06°)
OKLab	oklab(78.08% -0.0722 -0.0835)
OKLCH	oklch(78.08% 0.11 229.2)
XYZ	xyz(40.8339, 48.8725, 89.7026)
Luminance	0.4888 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C5F0 #F08E63

analogous

#63F0D5 #63C5F0 #637FF0

triadic

#63C5F0 #F063C5 #C5F063

tetradic

#63C5F0 #D563F0 #F08E63 #7FF063

square

#63C5F0 #D563F0 #F08E63 #7FF063

split-complementary

#63C5F0 #F0637F #F0D563

monochromatic

#138FC6 #2BB0EB #63C5F0 #9BDAF5 #D3EFFB

Accessibility & contrast

On white

1.95

#63C5F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.78

#63C5F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C5F0

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C5F0	#FFFFFF	#000000	##000000
##63C5F0	1.00	1.95	10.78	10.78
#FFFFFF	1.95	1.00	21.00	21.00
#000000	10.78	21.00	1.00	1.00
##000000	10.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFC2F2

Deuteranopia (green-blind)

#9BB3EF

Tritanopia (blue-blind)

#00D1D3

Achromatopsia (no color)

#BABABA

Design tokens & code

CSS

--color: #63c5f0;
/* rgb */ color: rgb(99, 197, 240);
/* oklch */ color: oklch(78.1% 0.110 229.2);

Tailwind

colors: {
  custom: {
    50: '#9bd6f5',
    500: '#63c5f0',
    950: '#000000',
  },
}

SCSS

$custom: #63c5f0;
$custom-light: #9bd6f5;
$custom-dark: #000000;

JSON

{
  "hex": "#63c5f0",
  "rgb": {
    "r": 99,
    "g": 197,
    "b": 240
  },
  "hsl": {
    "h": 198.298,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.78079,
    "c": 0.11039,
    "h": 229.2
  },
  "luminance": 0.48876
}

Semantic roles & 50–950 ramp

primary

#63C5F0

secondary

#EECEC1

accent

#4907DF

background

#FAFDFE

surface

#F4FAFD

border

#CED3D5

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #63C5F0

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

Preview Lab → · Contrast checker → · Palette generator →