#638EF1#638EF1

#638EF1 is a light, vivid blue. Relative luminance 0.283; OKLCH L 66.2% C 0.155 H 264.8°. Best body text is #000000 at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#638EF1
RGB	rgb(99, 142, 241)
HSL	hsl(222, 84%, 67%)
HSV	hsv(222, 59%, 95%)
CMYK	cmyk(58.9%, 41.1%, 0%, 5.5%)
CIE-LAB	lab(60.20, 14.57, -54.25)
CIE-LCH	lch(60.20, 56.17, 285.04°)
OKLab	oklab(66.18% -0.014 -0.1543)
OKLCH	oklch(66.18% 0.155 264.8)
XYZ	xyz(30.6903, 28.3469, 87.0562)
Luminance	0.2835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EF1 #F1C663

analogous

#63D5F1 #638EF1 #7F63F1

triadic

#638EF1 #F1638E #8EF163

tetradic

#638EF1 #F163D5 #F1C663 #63F17F

square

#638EF1 #F163D5 #F1C663 #63F17F

split-complementary

#638EF1 #F17F63 #D5F163

monochromatic

#1249C8 #2B65EC #638EF1 #9BB7F6 #D3DFFB

Accessibility & contrast

On white

3.15

#638EF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.67

#638EF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EF1

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EF1	#FFFFFF	#000000	##000000
##638EF1	1.00	3.15	6.67	6.67
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.67	21.00	1.00	1.00
##000000	6.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6398F5

Deuteranopia (green-blind)

#4F8BEF

Tritanopia (blue-blind)

#00A4B4

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #638ef1;
/* rgb */ color: rgb(99, 142, 241);
/* oklch */ color: oklch(66.2% 0.155 264.8);

Tailwind

colors: {
  custom: {
    50: '#9aaef6',
    500: '#638ef1',
    950: '#000000',
  },
}

SCSS

$custom: #638ef1;
$custom-light: #9aaef6;
$custom-dark: #000000;

JSON

{
  "hex": "#638ef1",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 241
  },
  "hsl": {
    "h": 221.831,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.66182,
    "c": 0.15496,
    "h": 264.8
  },
  "luminance": 0.2835
}

Semantic roles & 50–950 ramp

primary

#638EF1

secondary

#EFE1C1

accent

#9E06E0

background

#FAFAFF

surface

#F3F4FE

border

#CDCED6

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638EF1

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

Preview Lab → · Contrast checker → · Palette generator →