#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
RGB	rgb(99, 141, 241)
HSL	hsl(222, 84%, 67%)
HSV	hsv(222, 59%, 95%)
CMYK	cmyk(58.9%, 41.5%, 0%, 5.5%)
CIE-LAB	lab(59.93, 15.17, -54.67)
CIE-LCH	lch(59.93, 56.74, 285.51°)
OKLab	oklab(65.98% -0.013 -0.1556)
OKLCH	oklch(65.98% 0.156 265.2)
XYZ	xyz(30.5422, 28.0507, 87.0069)
Luminance	0.2805 (WCAG relative)
Temperature	cool
Family	blue

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
##638DF1	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

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 →