#638BF6#638BF6

#638BF6 is a light, vivid blue. Relative luminance 0.278; OKLCH L 65.9% C 0.165 H 266.5°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#638BF6
RGB	rgb(99, 139, 246)
HSL	hsl(224, 89%, 68%)
HSV	hsv(224, 60%, 96%)
CMYK	cmyk(59.8%, 43.5%, 0%, 3.5%)
CIE-LAB	lab(59.68, 18.00, -57.84)
CIE-LCH	lch(59.68, 60.57, 287.28°)
OKLab	oklab(65.87% -0.0101 -0.1649)
OKLCH	oklch(65.87% 0.165 266.5)
XYZ	xyz(31.0071, 27.7691, 90.8969)
Luminance	0.2777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BF6 #F6CE63

analogous

#63D5F6 #638BF6 #8463F6

triadic

#638BF6 #F6638B #8BF663

tetradic

#638BF6 #F663D5 #F6CE63 #63F684

square

#638BF6 #F663D5 #F6CE63 #63F684

split-complementary

#638BF6 #F68463 #D5F663

monochromatic

#0C42D2 #2960F3 #638BF6 #9DB6F9 #D7E1FD

Accessibility & contrast

On white

3.20

#638BF6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#638BF6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BF6

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BF6	#FFFFFF	#000000	##000000
##638BF6	1.00	3.20	6.55	6.55
#FFFFFF	3.20	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A97FA

Deuteranopia (green-blind)

#448AF4

Tritanopia (blue-blind)

#00A3B4

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #638bf6;
/* rgb */ color: rgb(99, 139, 246);
/* oklch */ color: oklch(65.9% 0.165 266.5);

Tailwind

colors: {
  custom: {
    50: '#9bacfa',
    500: '#638bf6',
    950: '#000000',
  },
}

SCSS

$custom: #638bf6;
$custom-light: #9bacfa;
$custom-dark: #000000;

JSON

{
  "hex": "#638bf6",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 246
  },
  "hsl": {
    "h": 223.673,
    "s": 89.091,
    "l": 67.647
  },
  "oklch": {
    "l": 0.6587,
    "c": 0.1652,
    "h": 266.5
  },
  "luminance": 0.27772
}

Semantic roles & 50–950 ramp

primary

#638BF6

secondary

#F1E5C4

accent

#A700E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638BF6

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

Preview Lab → · Contrast checker → · Palette generator →