#63A3FF#63A3FF

#63A3FF is a light, vivid blue. Relative luminance 0.361; OKLCH L 71.4% C 0.150 H 257.5°. Best body text is #000000 at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#63A3FF
RGB	rgb(99, 163, 255)
HSL	hsl(215, 100%, 69%)
HSV	hsv(215, 61%, 100%)
CMYK	cmyk(61.2%, 36.1%, 0%, 0%)
CIE-LAB	lab(66.57, 6.82, -51.81)
CIE-LCH	lch(66.57, 52.26, 277.50°)
OKLab	oklab(71.35% -0.0324 -0.147)
OKLCH	oklch(71.35% 0.151 257.5)
XYZ	xyz(36.2864, 36.0637, 99.6371)
Luminance	0.3607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A3FF #FFBF63

analogous

#63F1FF #63A3FF #7163FF

triadic

#63A3FF #FF63A3 #A3FF63

tetradic

#63A3FF #FF63F1 #FFBF63 #63FF71

square

#63A3FF #FF63F1 #FFBF63 #63FF71

split-complementary

#63A3FF #FF7163 #F1FF63

monochromatic

#005FE8 #267FFF #63A3FF #A0C7FF #DDEBFF

Accessibility & contrast

On white

2.56

#63A3FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.21

#63A3FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A3FF

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A3FF	#FFFFFF	#000000	##000000
##63A3FF	1.00	2.56	8.21	8.21
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.21	21.00	1.00	1.00
##000000	8.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7BAAFF

Deuteranopia (green-blind)

#669BFD

Tritanopia (blue-blind)

#00B8C5

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #63a3ff;
/* rgb */ color: rgb(99, 163, 255);
/* oklch */ color: oklch(71.4% 0.150 257.5);

Tailwind

colors: {
  custom: {
    50: '#9cbdff',
    500: '#63a3ff',
    950: '#000000',
  },
}

SCSS

$custom: #63a3ff;
$custom-light: #9cbdff;
$custom-dark: #000000;

JSON

{
  "hex": "#63a3ff",
  "rgb": {
    "r": 99,
    "g": 163,
    "b": 255
  },
  "hsl": {
    "h": 215.385,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.7135,
    "c": 0.1505,
    "h": 257.5
  },
  "luminance": 0.36067
}

Semantic roles & 50–950 ramp

primary

#63A3FF

secondary

#F5E3C8

accent

#8700E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #63A3FF

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

Preview Lab → · Contrast checker → · Palette generator →