#63A9FB#63A9FB

#63A9FB is a light, vivid cyan. Relative luminance 0.380; OKLCH L 72.4% C 0.140 H 253.5°. Best body text is #000000 at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#63A9FB
RGB	rgb(99, 169, 251)
HSL	hsl(212, 95%, 69%)
HSV	hsv(212, 61%, 98%)
CMYK	cmyk(60.6%, 32.7%, 0%, 1.6%)
CIE-LAB	lab(68.01, 2.10, -47.36)
CIE-LCH	lch(68.01, 47.40, 272.54°)
OKLab	oklab(72.41% -0.0395 -0.1339)
OKLCH	oklch(72.41% 0.14 253.5)
XYZ	xyz(36.7399, 37.9902, 96.6448)
Luminance	0.3799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A9FB #FBB563

analogous

#63F5FB #63A9FB #6963FB

triadic

#63A9FB #FB63A9 #A9FB63

tetradic

#63A9FB #FB63F5 #FBB563 #63FB69

square

#63A9FB #FB63F5 #FBB563 #63FB69

split-complementary

#63A9FB #FB6963 #F5FB63

monochromatic

#0669DE #2788F9 #63A9FB #9FCAFD #DAEBFE

Accessibility & contrast

On white

2.44

#63A9FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.60

#63A9FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A9FB

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A9FB	#FFFFFF	#000000	##000000
##63A9FB	1.00	2.44	8.60	8.60
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.60	21.00	1.00	1.00
##000000	8.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86AEFE

Deuteranopia (green-blind)

#729FF9

Tritanopia (blue-blind)

#00BCC7

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #63a9fb;
/* rgb */ color: rgb(99, 169, 251);
/* oklch */ color: oklch(72.4% 0.140 253.5);

Tailwind

colors: {
  custom: {
    50: '#9bc2fd',
    500: '#63a9fb',
    950: '#000000',
  },
}

SCSS

$custom: #63a9fb;
$custom-light: #9bc2fd;
$custom-dark: #000000;

JSON

{
  "hex": "#63a9fb",
  "rgb": {
    "r": 99,
    "g": 169,
    "b": 251
  },
  "hsl": {
    "h": 212.368,
    "s": 95,
    "l": 68.627
  },
  "oklch": {
    "l": 0.72415,
    "c": 0.13962,
    "h": 253.5
  },
  "luminance": 0.37994
}

Semantic roles & 50–950 ramp

primary

#63A9FB

secondary

#F4DFC6

accent

#7C00E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #63A9FB

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

Preview Lab → · Contrast checker → · Palette generator →