#638FED#638FED

#638FED is a light, vivid blue. Relative luminance 0.284; OKLCH L 66.2% C 0.148 H 263.9°. Best body text is #000000 at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#638FED
RGB	rgb(99, 143, 237)
HSL	hsl(221, 79%, 66%)
HSV	hsv(221, 58%, 93%)
CMYK	cmyk(58.2%, 39.7%, 0%, 7.1%)
CIE-LAB	lab(60.26, 12.68, -51.95)
CIE-LCH	lch(60.26, 53.47, 283.71°)
OKLab	oklab(66.16% -0.0158 -0.1476)
OKLCH	oklch(66.16% 0.148 263.9)
XYZ	xyz(30.2489, 28.4095, 83.9939)
Luminance	0.2841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638FED #EDC163

analogous

#63D4ED #638FED #7C63ED

triadic

#638FED #ED638F #8FED63

tetradic

#638FED #ED63D4 #EDC163 #63ED7C

square

#638FED #ED63D4 #EDC163 #63ED7C

split-complementary

#638FED #ED7C63 #D4ED63

monochromatic

#164CC0 #2C68E7 #638FED #9AB6F3 #D1DEFA

Accessibility & contrast

On white

3.14

#638FED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.68

#638FED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638FED

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638FED	#FFFFFF	#000000	##000000
##638FED	1.00	3.14	6.68	6.68
#FFFFFF	3.14	1.00	21.00	21.00
#000000	6.68	21.00	1.00	1.00
##000000	6.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6798F1

Deuteranopia (green-blind)

#548BEB

Tritanopia (blue-blind)

#00A4B2

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #638fed;
/* rgb */ color: rgb(99, 143, 237);
/* oklch */ color: oklch(66.2% 0.148 263.9);

Tailwind

colors: {
  custom: {
    50: '#9aaff3',
    500: '#638fed',
    950: '#000000',
  },
}

SCSS

$custom: #638fed;
$custom-light: #9aaff3;
$custom-dark: #000000;

JSON

{
  "hex": "#638fed",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 237
  },
  "hsl": {
    "h": 220.87,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.66157,
    "c": 0.14843,
    "h": 263.9
  },
  "luminance": 0.28412
}

Semantic roles & 50–950 ramp

primary

#638FED

secondary

#EDDEBF

accent

#990ADC

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638FED

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

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