#638BEE#638BEE

#638BEE is a light, vivid blue. Relative luminance 0.273; OKLCH L 65.4% C 0.154 H 265.7°. Best body text is #000000 at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#638BEE
RGB	rgb(99, 139, 238)
HSL	hsl(223, 80%, 66%)
HSV	hsv(223, 58%, 93%)
CMYK	cmyk(58.4%, 41.6%, 0%, 6.7%)
CIE-LAB	lab(59.24, 15.38, -54.12)
CIE-LCH	lch(59.24, 56.26, 285.87°)
OKLab	oklab(65.39% -0.0115 -0.154)
OKLCH	oklch(65.39% 0.154 265.7)
XYZ	xyz(29.8056, 27.2885, 84.5689)
Luminance	0.2729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BEE #EEC663

analogous

#63D0EE #638BEE #8063EE

triadic

#638BEE #EE638B #8BEE63

tetradic

#638BEE #EE63D0 #EEC663 #63EE80

square

#638BEE #EE63D0 #EEC663 #63EE80

split-complementary

#638BEE #EE8063 #D0EE63

monochromatic

#1547C2 #2C62E8 #638BEE #9AB4F4 #D1DDFA

Accessibility & contrast

On white

3.25

#638BEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.46

#638BEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BEE

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BEE	#FFFFFF	#000000	##000000
##638BEE	1.00	3.25	6.46	6.46
#FFFFFF	3.25	1.00	21.00	21.00
#000000	6.46	21.00	1.00	1.00
##000000	6.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F95F2

Deuteranopia (green-blind)

#4C89EC

Tritanopia (blue-blind)

#00A1B1

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #638bee;
/* rgb */ color: rgb(99, 139, 238);
/* oklch */ color: oklch(65.4% 0.154 265.7);

Tailwind

colors: {
  custom: {
    50: '#9aacf4',
    500: '#638bee',
    950: '#000000',
  },
}

SCSS

$custom: #638bee;
$custom-light: #9aacf4;
$custom-dark: #000000;

JSON

{
  "hex": "#638bee",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 238
  },
  "hsl": {
    "h": 222.734,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.6539,
    "c": 0.15441,
    "h": 265.7
  },
  "luminance": 0.27291
}

Semantic roles & 50–950 ramp

primary

#638BEE

secondary

#EDE0C0

accent

#A009DD

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638BEE

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

Preview Lab → · Contrast checker → · Palette generator →