#638AF5#638AF5

#638AF5 is a light, vivid blue. Relative luminance 0.274; OKLCH L 65.6% C 0.165 H 266.8°. Best body text is #000000 at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#638AF5
RGB	rgb(99, 138, 245)
HSL	hsl(224, 88%, 67%)
HSV	hsv(224, 60%, 96%)
CMYK	cmyk(59.6%, 43.7%, 0%, 3.9%)
CIE-LAB	lab(59.36, 18.27, -57.79)
CIE-LCH	lch(59.36, 60.61, 287.54°)
OKLab	oklab(65.61% -0.0092 -0.1648)
OKLCH	oklch(65.61% 0.165 266.8)
XYZ	xyz(30.7099, 27.4196, 90.0427)
Luminance	0.2742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638AF5 #F5CE63

analogous

#63D3F5 #638AF5 #8563F5

triadic

#638AF5 #F5638A #8AF563

tetradic

#638AF5 #F563D3 #F5CE63 #63F585

square

#638AF5 #F563D3 #F5CE63 #63F585

split-complementary

#638AF5 #F58563 #D3F563

monochromatic

#0D41D0 #295FF1 #638AF5 #9DB5F9 #D6E0FC

Accessibility & contrast

On white

3.24

#638AF5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.48

#638AF5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638AF5

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638AF5	#FFFFFF	#000000	##000000
##638AF5	1.00	3.24	6.48	6.48
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.48	21.00	1.00	1.00
##000000	6.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5996F9

Deuteranopia (green-blind)

#4389F3

Tritanopia (blue-blind)

#00A2B4

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #638af5;
/* rgb */ color: rgb(99, 138, 245);
/* oklch */ color: oklch(65.6% 0.165 266.8);

Tailwind

colors: {
  custom: {
    50: '#9babf9',
    500: '#638af5',
    950: '#000000',
  },
}

SCSS

$custom: #638af5;
$custom-light: #9babf9;
$custom-dark: #000000;

JSON

{
  "hex": "#638af5",
  "rgb": {
    "r": 99,
    "g": 138,
    "b": 245
  },
  "hsl": {
    "h": 223.973,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.65608,
    "c": 0.16504,
    "h": 266.8
  },
  "luminance": 0.27422
}

Semantic roles & 50–950 ramp

primary

#638AF5

secondary

#F1E5C3

accent

#A801E5

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638AF5

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

Preview Lab → · Contrast checker → · Palette generator →