#63C9F5#63C9F5

#63C9F5 is a light, moderate cyan. Relative luminance 0.510; OKLCH L 79.2% C 0.113 H 228.9°. Best body text is #000000 at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#63C9F5
RGB	rgb(99, 201, 245)
HSL	hsl(198, 88%, 67%)
HSV	hsv(198, 60%, 96%)
CMYK	cmyk(59.6%, 18%, 0%, 3.9%)
CIE-LAB	lab(76.69, -17.15, -30.61)
CIE-LCH	lch(76.69, 35.09, 240.74°)
OKLab	oklab(79.19% -0.0746 -0.0854)
OKLCH	oklch(79.19% 0.113 228.9)
XYZ	xyz(42.5073, 51.0143, 93.9751)
Luminance	0.5102 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C9F5 #F58F63

analogous

#63F5D8 #63C9F5 #6380F5

triadic

#63C9F5 #F563C9 #C9F563

tetradic

#63C9F5 #D863F5 #F58F63 #80F563

square

#63C9F5 #D863F5 #F58F63 #80F563

split-complementary

#63C9F5 #F56380 #F5D863

monochromatic

#0D96D0 #29B5F1 #63C9F5 #9DDDF9 #D6F1FC

Accessibility & contrast

On white

1.87

#63C9F5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.20

#63C9F5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C9F5

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C9F5	#FFFFFF	#000000	##000000
##63C9F5	1.00	1.87	11.20	11.20
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.20	21.00	1.00	1.00
##000000	11.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C6F7

Deuteranopia (green-blind)

#9EB7F4

Tritanopia (blue-blind)

#00D5D7

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #63c9f5;
/* rgb */ color: rgb(99, 201, 245);
/* oklch */ color: oklch(79.2% 0.113 228.9);

Tailwind

colors: {
  custom: {
    50: '#9bd9f8',
    500: '#63c9f5',
    950: '#000000',
  },
}

SCSS

$custom: #63c9f5;
$custom-light: #9bd9f8;
$custom-dark: #000000;

JSON

{
  "hex": "#63c9f5",
  "rgb": {
    "r": 99,
    "g": 201,
    "b": 245
  },
  "hsl": {
    "h": 198.082,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.79189,
    "c": 0.11339,
    "h": 228.9
  },
  "luminance": 0.51019
}

Semantic roles & 50–950 ramp

primary

#63C9F5

secondary

#CC5F30

accent

#4601E5

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #63C9F5

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

Preview Lab → · Contrast checker → · Palette generator →