#638BEC#638BEC

#638BEC is a light, vivid blue. Relative luminance 0.272; OKLCH L 65.3% C 0.152 H 265.5°. Best body text is #000000 at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#638BEC
RGB	rgb(99, 139, 236)
HSL	hsl(222, 78%, 66%)
HSV	hsv(222, 58%, 93%)
CMYK	cmyk(58.1%, 41.1%, 0%, 7.5%)
CIE-LAB	lab(59.13, 14.73, -53.18)
CIE-LCH	lch(59.13, 55.18, 285.48°)
OKLab	oklab(65.27% -0.0118 -0.1512)
OKLCH	oklch(65.27% 0.152 265.5)
XYZ	xyz(29.5134, 27.1716, 83.0300)
Luminance	0.2717 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BEC #ECC463

analogous

#63CFEC #638BEC #7F63EC

triadic

#638BEC #EC638B #8BEC63

tetradic

#638BEC #EC63CF #ECC463 #63EC7F

square

#638BEC #EC63CF #ECC463 #63EC7F

split-complementary

#638BEC #EC7F63 #CFEC63

monochromatic

#1748BE #2C62E5 #638BEC #9AB4F3 #D0DCF9

Accessibility & contrast

On white

3.26

#638BEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.43

#638BEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BEC

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BEC	#FFFFFF	#000000	##000000
##638BEC	1.00	3.26	6.43	6.43
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.43	21.00	1.00	1.00
##000000	6.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6195F0

Deuteranopia (green-blind)

#4E89EA

Tritanopia (blue-blind)

#00A1B0

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #638bec;
/* rgb */ color: rgb(99, 139, 236);
/* oklch */ color: oklch(65.3% 0.152 265.5);

Tailwind

colors: {
  custom: {
    50: '#99acf2',
    500: '#638bec',
    950: '#000000',
  },
}

SCSS

$custom: #638bec;
$custom-light: #99acf2;
$custom-dark: #000000;

JSON

{
  "hex": "#638bec",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 236
  },
  "hsl": {
    "h": 222.482,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.65273,
    "c": 0.15169,
    "h": 265.5
  },
  "luminance": 0.27174
}

Semantic roles & 50–950 ramp

primary

#638BEC

secondary

#ECDFBF

accent

#9E0BDB

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638BEC

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

Preview Lab → · Contrast checker → · Palette generator →