#638DF5#638DF5

#638DF5 is a light, vivid blue. Relative luminance 0.283; OKLCH L 66.2% C 0.162 H 265.6°. Best body text is #000000 at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#638DF5
RGB	rgb(99, 141, 245)
HSL	hsl(223, 88%, 67%)
HSV	hsv(223, 60%, 96%)
CMYK	cmyk(59.6%, 42.4%, 0%, 3.9%)
CIE-LAB	lab(60.15, 16.47, -56.53)
CIE-LCH	lch(60.15, 58.88, 286.25°)
OKLab	oklab(66.22% -0.0123 -0.161)
OKLCH	oklch(66.22% 0.162 265.6)
XYZ	xyz(31.1463, 28.2923, 90.1881)
Luminance	0.2829 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DF5 #F5CB63

analogous

#63D6F5 #638DF5 #8263F5

triadic

#638DF5 #F5638D #8DF563

tetradic

#638DF5 #F563D6 #F5CB63 #63F582

square

#638DF5 #F563D6 #F5CB63 #63F582

split-complementary

#638DF5 #F58263 #D6F563

monochromatic

#0D45D0 #2963F1 #638DF5 #9DB7F9 #D6E1FC

Accessibility & contrast

On white

3.15

#638DF5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.66

#638DF5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DF5

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DF5	#FFFFFF	#000000	##000000
##638DF5	1.00	3.15	6.66	6.66
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.66	21.00	1.00	1.00
##000000	6.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E98F9

Deuteranopia (green-blind)

#498BF3

Tritanopia (blue-blind)

#00A4B5

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #638df5;
/* rgb */ color: rgb(99, 141, 245);
/* oklch */ color: oklch(66.2% 0.162 265.6);

Tailwind

colors: {
  custom: {
    50: '#9badf9',
    500: '#638df5',
    950: '#000000',
  },
}

SCSS

$custom: #638df5;
$custom-light: #9badf9;
$custom-dark: #000000;

JSON

{
  "hex": "#638df5",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 245
  },
  "hsl": {
    "h": 222.74,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.66215,
    "c": 0.16151,
    "h": 265.6
  },
  "luminance": 0.28295
}

Semantic roles & 50–950 ramp

primary

#638DF5

secondary

#F1E4C3

accent

#A301E5

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638DF5

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

Preview Lab → · Contrast checker → · Palette generator →