#638DEC#638DEC

#638DEC is a light, vivid blue. Relative luminance 0.278; OKLCH L 65.7% C 0.149 H 264.6°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#638DEC
RGB	rgb(99, 141, 236)
HSL	hsl(222, 78%, 66%)
HSV	hsv(222, 58%, 93%)
CMYK	cmyk(58.1%, 40.3%, 0%, 7.5%)
CIE-LAB	lab(59.67, 13.54, -52.33)
CIE-LCH	lch(59.67, 54.05, 284.51°)
OKLab	oklab(65.69% -0.0139 -0.1487)
OKLCH	oklch(65.69% 0.149 264.6)
XYZ	xyz(29.8056, 27.7561, 83.1274)
Luminance	0.2776 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DEC #ECC263

analogous

#63D1EC #638DEC #7D63EC

triadic

#638DEC #EC638D #8DEC63

tetradic

#638DEC #EC63D1 #ECC263 #63EC7D

square

#638DEC #EC63D1 #ECC263 #63EC7D

split-complementary

#638DEC #EC7D63 #D1EC63

monochromatic

#174ABE #2C65E5 #638DEC #9AB5F3 #D0DDF9

Accessibility & contrast

On white

3.21

#638DEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#638DEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DEC

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DEC	#FFFFFF	#000000	##000000
##638DEC	1.00	3.21	6.55	6.55
#FFFFFF	3.21	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)

#6496F0

Deuteranopia (green-blind)

#528AEA

Tritanopia (blue-blind)

#00A2B1

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #638dec;
/* rgb */ color: rgb(99, 141, 236);
/* oklch */ color: oklch(65.7% 0.149 264.6);

Tailwind

colors: {
  custom: {
    50: '#99adf2',
    500: '#638dec',
    950: '#000000',
  },
}

SCSS

$custom: #638dec;
$custom-light: #99adf2;
$custom-dark: #000000;

JSON

{
  "hex": "#638dec",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 236
  },
  "hsl": {
    "h": 221.606,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.65685,
    "c": 0.14937,
    "h": 264.6
  },
  "luminance": 0.27759
}

Semantic roles & 50–950 ramp

primary

#638DEC

secondary

#ECDEBF

accent

#9B0BDB

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638DEC

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

Preview Lab → · Contrast checker → · Palette generator →