#63B9F8#63B9F8

#63B9F8 is a light, vivid cyan. Relative luminance 0.441; OKLCH L 75.8% C 0.123 H 242.5°. Best body text is #000000 at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#63B9F8
RGB	rgb(99, 185, 248)
HSL	hsl(205, 91%, 68%)
HSV	hsv(205, 60%, 97%)
CMYK	cmyk(60.1%, 25.4%, 0%, 2.7%)
CIE-LAB	lab(72.31, -7.74, -39.00)
CIE-LCH	lch(72.31, 39.76, 258.77°)
OKLab	oklab(75.75% -0.0569 -0.1095)
OKLCH	oklch(75.75% 0.123 242.5)
XYZ	xyz(39.4315, 44.1241, 95.2275)
Luminance	0.4413 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B9F8 #F8A263

analogous

#63F8EC #63B9F8 #636EF8

triadic

#63B9F8 #F863B9 #B9F863

tetradic

#63B9F8 #EC63F8 #F8A263 #6EF863

square

#63B9F8 #EC63F8 #F8A263 #6EF863

split-complementary

#63B9F8 #F8636E #F8EC63

monochromatic

#0A80D7 #289FF5 #63B9F8 #9ED3FB #D8EEFD

Accessibility & contrast

On white

2.14

#63B9F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.83

#63B9F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B9F8

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B9F8	#FFFFFF	#000000	##000000
##63B9F8	1.00	2.14	9.83	9.83
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.83	21.00	1.00	1.00
##000000	9.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DBAFB

Deuteranopia (green-blind)

#89ABF7

Tritanopia (blue-blind)

#00C8CF

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #63b9f8;
/* rgb */ color: rgb(99, 185, 248);
/* oklch */ color: oklch(75.8% 0.123 242.5);

Tailwind

colors: {
  custom: {
    50: '#9bcdfa',
    500: '#63b9f8',
    950: '#000000',
  },
}

SCSS

$custom: #63b9f8;
$custom-light: #9bcdfa;
$custom-dark: #000000;

JSON

{
  "hex": "#63b9f8",
  "rgb": {
    "r": 99,
    "g": 185,
    "b": 248
  },
  "hsl": {
    "h": 205.369,
    "s": 91.411,
    "l": 68.039
  },
  "oklch": {
    "l": 0.75753,
    "c": 0.12346,
    "h": 242.5
  },
  "luminance": 0.44128
}

Semantic roles & 50–950 ramp

primary

#63B9F8

secondary

#F2D8C5

accent

#6100E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B9F8

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

Preview Lab → · Contrast checker → · Palette generator →