#638EEE#638EEE

#638EEE is a light, vivid blue. Relative luminance 0.282; OKLCH L 66.0% C 0.151 H 264.5°. Best body text is #000000 at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#638EEE
RGB	rgb(99, 142, 238)
HSL	hsl(221, 80%, 66%)
HSV	hsv(221, 58%, 93%)
CMYK	cmyk(58.4%, 40.3%, 0%, 6.7%)
CIE-LAB	lab(60.04, 13.60, -52.84)
CIE-LCH	lch(60.04, 54.56, 284.43°)
OKLab	oklab(66.01% -0.0146 -0.1502)
OKLCH	oklch(66.01% 0.151 264.5)
XYZ	xyz(30.2459, 28.1692, 84.7156)
Luminance	0.2817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EEE #EEC363

analogous

#63D3EE #638EEE #7D63EE

triadic

#638EEE #EE638E #8EEE63

tetradic

#638EEE #EE63D3 #EEC363 #63EE7D

square

#638EEE #EE63D3 #EEC363 #63EE7D

split-complementary

#638EEE #EE7D63 #D3EE63

monochromatic

#154AC2 #2C66E8 #638EEE #9AB6F4 #D1DEFA

Accessibility & contrast

On white

3.17

#638EEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.63

#638EEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EEE

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EEE	#FFFFFF	#000000	##000000
##638EEE	1.00	3.17	6.63	6.63
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.63	21.00	1.00	1.00
##000000	6.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6498F2

Deuteranopia (green-blind)

#528BEC

Tritanopia (blue-blind)

#00A3B2

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #638eee;
/* rgb */ color: rgb(99, 142, 238);
/* oklch */ color: oklch(66.0% 0.151 264.5);

Tailwind

colors: {
  custom: {
    50: '#9aaef4',
    500: '#638eee',
    950: '#000000',
  },
}

SCSS

$custom: #638eee;
$custom-light: #9aaef4;
$custom-dark: #000000;

JSON

{
  "hex": "#638eee",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 238
  },
  "hsl": {
    "h": 221.439,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.66007,
    "c": 0.15092,
    "h": 264.5
  },
  "luminance": 0.28172
}

Semantic roles & 50–950 ramp

primary

#638EEE

secondary

#EDDFC0

accent

#9B09DD

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638EEE

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

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