#638DF1#638DF1

#638DF1 is a light, vivid blue. Relative luminance 0.281; OKLCH L 66.0% C 0.156 H 265.2°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX#638DF1
RGBrgb(99, 141, 241)
HSLhsl(222, 84%, 67%)
HSVhsv(222, 59%, 95%)
CMYKcmyk(58.9%, 41.5%, 0%, 5.5%)
CIE-LABlab(59.93, 15.17, -54.67)
CIE-LCHlch(59.93, 56.74, 285.51°)
OKLaboklab(65.98% -0.013 -0.1556)
OKLCHoklch(65.98% 0.156 265.2)
XYZxyz(30.5422, 28.0507, 87.0069)
Luminance0.2805 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638DF1 #F1C763
analogous
#63D4F1 #638DF1 #8063F1
triadic
#638DF1 #F1638D #8DF163
tetradic
#638DF1 #F163D4 #F1C763 #63F180
square
#638DF1 #F163D4 #F1C763 #63F180
split-complementary
#638DF1 #F18063 #D4F163
monochromatic
#1248C8 #2B64EC #638DF1 #9BB6F6 #D3DFFB

Accessibility & contrast

On white

3.18
#638DF1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.61
#638DF1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DF1
6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638DF1#FFFFFF#000000##000000
##638DF11.003.186.616.61
#FFFFFF3.181.0021.0021.00
#0000006.6121.001.001.00
##0000006.6121.001.001.00

Color blindness preview

Protanopia (red-blind)
#6197F5
Deuteranopia (green-blind)
#4D8AEF
Tritanopia (blue-blind)
#00A3B3
Achromatopsia (no color)
#909090

Design tokens & code

CSS
--color: #638df1;
/* rgb */ color: rgb(99, 141, 241);
/* oklch */ color: oklch(66.0% 0.156 265.2);
Tailwind
colors: {
  custom: {
    50: '#9aadf6',
    500: '#638df1',
    950: '#000000',
  },
}
SCSS
$custom: #638df1;
$custom-light: #9aadf6;
$custom-dark: #000000;
JSON
{
  "hex": "#638df1",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 241
  },
  "hsl": {
    "h": 222.254,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.65977,
    "c": 0.15612,
    "h": 265.2
  },
  "luminance": 0.28053
}

Semantic roles & 50–950 ramp

primary
#638DF1
secondary
#EFE1C1
accent
#9F06E0
background
#FAFAFF
surface
#F3F4FE
border
#CDCED6
text
#0F1017
muted
#7F7F85

Preview Lab

Preview with #638DF1

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

Preview Lab → · Contrast checker → · Palette generator →

#638DF1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva