#638BEB#638BEB

#638BEB is a light, vivid blue. Relative luminance 0.271; OKLCH L 65.2% C 0.150 H 265.4°. Best body text is #000000 at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#638BEB
RGB	rgb(99, 139, 235)
HSL	hsl(222, 77%, 65%)
HSV	hsv(222, 58%, 92%)
CMYK	cmyk(57.9%, 40.9%, 0%, 7.8%)
CIE-LAB	lab(59.08, 14.41, -52.71)
CIE-LCH	lch(59.08, 54.65, 285.29°)
OKLab	oklab(65.21% -0.012 -0.1499)
OKLCH	oklch(65.21% 0.15 265.4)
XYZ	xyz(29.3685, 27.1136, 82.2670)
Luminance	0.2712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BEB #EBC363

analogous

#63CFEB #638BEB #7F63EB

triadic

#638BEB #EB638B #8BEB63

tetradic

#638BEB #EB63CF #EBC363 #63EB7F

square

#638BEB #EB63CF #EBC363 #63EB7F

split-complementary

#638BEB #EB7F63 #CFEB63

monochromatic

#1848BC #2D63E4 #638BEB #99B3F2 #CFDCF9

Accessibility & contrast

On white

3.27

#638BEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.42

#638BEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BEB

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BEB	#FFFFFF	#000000	##000000
##638BEB	1.00	3.27	6.42	6.42
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.42	21.00	1.00	1.00
##000000	6.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6195EF

Deuteranopia (green-blind)

#4F88E9

Tritanopia (blue-blind)

#00A0B0

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #638beb;
/* rgb */ color: rgb(99, 139, 235);
/* oklch */ color: oklch(65.2% 0.150 265.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#638beb",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 235
  },
  "hsl": {
    "h": 222.353,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.65214,
    "c": 0.15034,
    "h": 265.4
  },
  "luminance": 0.27116
}

Semantic roles & 50–950 ramp

primary

#638BEB

secondary

#ECDEBE

accent

#9D0CDA

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638BEB

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

Preview Lab → · Contrast checker → · Palette generator →