#63B3FB#63B3FB

#63B3FB is a light, vivid cyan. Relative luminance 0.419; OKLCH L 74.6% C 0.131 H 247.7°. Best body text is #000000 at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#63B3FB
RGB	rgb(99, 179, 251)
HSL	hsl(208, 95%, 69%)
HSV	hsv(208, 61%, 98%)
CMYK	cmyk(60.6%, 28.7%, 0%, 1.6%)
CIE-LAB	lab(70.77, -3.51, -43.03)
CIE-LCH	lch(70.77, 43.17, 265.34°)
OKLab	oklab(74.58% -0.0498 -0.1212)
OKLCH	oklch(74.58% 0.131 247.7)
XYZ	xyz(38.6719, 41.8542, 97.2888)
Luminance	0.4186 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3FB #FBAB63

analogous

#63FBF7 #63B3FB #6367FB

triadic

#63B3FB #FB63B3 #B3FB63

tetradic

#63B3FB #F763FB #FBAB63 #67FB63

square

#63B3FB #F763FB #FBAB63 #67FB63

split-complementary

#63B3FB #FB6367 #FBF763

monochromatic

#0677DE #2796F9 #63B3FB #9FD0FD #DAEDFE

Accessibility & contrast

On white

2.24

#63B3FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.37

#63B3FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3FB

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3FB	#FFFFFF	#000000	##000000
##63B3FB	1.00	2.24	9.37	9.37
#FFFFFF	2.24	1.00	21.00	21.00
#000000	9.37	21.00	1.00	1.00
##000000	9.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94B5FE

Deuteranopia (green-blind)

#7FA6FA

Tritanopia (blue-blind)

#00C4CC

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #63b3fb;
/* rgb */ color: rgb(99, 179, 251);
/* oklch */ color: oklch(74.6% 0.131 247.7);

Tailwind

colors: {
  custom: {
    50: '#9bc9fd',
    500: '#63b3fb',
    950: '#000000',
  },
}

SCSS

$custom: #63b3fb;
$custom-light: #9bc9fd;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3fb",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 251
  },
  "hsl": {
    "h": 208.421,
    "s": 95,
    "l": 68.627
  },
  "oklch": {
    "l": 0.7458,
    "c": 0.13108,
    "h": 247.7
  },
  "luminance": 0.41858
}

Semantic roles & 50–950 ramp

primary

#63B3FB

secondary

#F4DCC6

accent

#6D00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B3FB

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

Preview Lab → · Contrast checker → · Palette generator →