#638EF7#638EF7

#638EF7 is a light, vivid blue. Relative luminance 0.287; OKLCH L 66.5% C 0.163 H 265.5°. Best body text is #000000 at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#638EF7
RGB	rgb(99, 142, 247)
HSL	hsl(223, 90%, 68%)
HSV	hsv(223, 60%, 97%)
CMYK	cmyk(59.9%, 42.5%, 0%, 3.1%)
CIE-LAB	lab(60.53, 16.53, -57.04)
CIE-LCH	lch(60.53, 59.38, 286.16°)
OKLab	oklab(66.54% -0.0129 -0.1625)
OKLCH	oklch(66.54% 0.163 265.5)
XYZ	xyz(31.6013, 28.7113, 91.8542)
Luminance	0.2871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EF7 #F7CC63

analogous

#63D8F7 #638EF7 #8263F7

triadic

#638EF7 #F7638E #8EF763

tetradic

#638EF7 #F763D8 #F7CC63 #63F782

square

#638EF7 #F763D8 #F7CC63 #63F782

split-complementary

#638EF7 #F78263 #D8F763

monochromatic

#0B46D5 #2964F4 #638EF7 #9DB8FA #D7E2FD

Accessibility & contrast

On white

3.11

#638EF7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.74

#638EF7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EF7

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EF7	#FFFFFF	#000000	##000000
##638EF7	1.00	3.11	6.74	6.74
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.74	21.00	1.00	1.00
##000000	6.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E99FB

Deuteranopia (green-blind)

#498CF5

Tritanopia (blue-blind)

#00A6B6

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #638ef7;
/* rgb */ color: rgb(99, 142, 247);
/* oklch */ color: oklch(66.5% 0.163 265.5);

Tailwind

colors: {
  custom: {
    50: '#9baefa',
    500: '#638ef7',
    950: '#000000',
  },
}

SCSS

$custom: #638ef7;
$custom-light: #9baefa;
$custom-dark: #000000;

JSON

{
  "hex": "#638ef7",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 247
  },
  "hsl": {
    "h": 222.568,
    "s": 90.244,
    "l": 67.843
  },
  "oklch": {
    "l": 0.66538,
    "c": 0.16302,
    "h": 265.5
  },
  "luminance": 0.28714
}

Semantic roles & 50–950 ramp

primary

#638EF7

secondary

#F2E4C4

accent

#A300E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638EF7

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

Preview Lab → · Contrast checker → · Palette generator →