#638FF5#638FF5

#638FF5 is a light, vivid blue. Relative luminance 0.289; OKLCH L 66.6% C 0.159 H 264.8°. Best body text is #000000 at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#638FF5
RGB	rgb(99, 143, 245)
HSL	hsl(222, 88%, 67%)
HSV	hsv(222, 60%, 96%)
CMYK	cmyk(59.6%, 41.6%, 0%, 3.9%)
CIE-LAB	lab(60.68, 15.28, -55.69)
CIE-LCH	lch(60.68, 57.74, 285.35°)
OKLab	oklab(66.62% -0.0143 -0.1585)
OKLCH	oklch(66.62% 0.159 264.8)
XYZ	xyz(31.4438, 28.8875, 90.2873)
Luminance	0.2889 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638FF5 #F5C963

analogous

#63D8F5 #638FF5 #8063F5

triadic

#638FF5 #F5638F #8FF563

tetradic

#638FF5 #F563D8 #F5C963 #63F580

square

#638FF5 #F563D8 #F5C963 #63F580

split-complementary

#638FF5 #F58063 #D8F563

monochromatic

#0D48D0 #2966F1 #638FF5 #9DB8F9 #D6E2FC

Accessibility & contrast

On white

3.10

#638FF5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.78

#638FF5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638FF5

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638FF5	#FFFFFF	#000000	##000000
##638FF5	1.00	3.10	6.78	6.78
#FFFFFF	3.10	1.00	21.00	21.00
#000000	6.78	21.00	1.00	1.00
##000000	6.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#629AF9

Deuteranopia (green-blind)

#4D8CF3

Tritanopia (blue-blind)

#00A6B6

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #638ff5;
/* rgb */ color: rgb(99, 143, 245);
/* oklch */ color: oklch(66.6% 0.159 264.8);

Tailwind

colors: {
  custom: {
    50: '#9baff9',
    500: '#638ff5',
    950: '#000000',
  },
}

SCSS

$custom: #638ff5;
$custom-light: #9baff9;
$custom-dark: #000000;

JSON

{
  "hex": "#638ff5",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 245
  },
  "hsl": {
    "h": 221.918,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.66623,
    "c": 0.15917,
    "h": 264.8
  },
  "luminance": 0.2889
}

Semantic roles & 50–950 ramp

primary

#638FF5

secondary

#F1E3C3

accent

#A001E5

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638FF5

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

Preview Lab → · Contrast checker → · Palette generator →