#638EED#638EED

#638EED is a light, vivid blue. Relative luminance 0.281; OKLCH L 66.0% C 0.150 H 264.3°. Best body text is #000000 at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#638EED
RGB	rgb(99, 142, 237)
HSL	hsl(221, 79%, 66%)
HSV	hsv(221, 58%, 93%)
CMYK	cmyk(58.2%, 40.1%, 0%, 7.1%)
CIE-LAB	lab(59.99, 13.27, -52.37)
CIE-LCH	lch(59.99, 54.03, 284.22°)
OKLab	oklab(65.95% -0.0148 -0.1488)
OKLCH	oklch(65.95% 0.15 264.3)
XYZ	xyz(30.0994, 28.1106, 83.9441)
Luminance	0.2811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EED #EDC263

analogous

#63D3ED #638EED #7D63ED

triadic

#638EED #ED638E #8EED63

tetradic

#638EED #ED63D3 #EDC263 #63ED7D

square

#638EED #ED63D3 #EDC263 #63ED7D

split-complementary

#638EED #ED7D63 #D3ED63

monochromatic

#164BC0 #2C66E7 #638EED #9AB6F3 #D1DDFA

Accessibility & contrast

On white

3.17

#638EED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.62

#638EED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EED

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EED	#FFFFFF	#000000	##000000
##638EED	1.00	3.17	6.62	6.62
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.62	21.00	1.00	1.00
##000000	6.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6597F1

Deuteranopia (green-blind)

#538BEB

Tritanopia (blue-blind)

#00A3B2

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #638eed;
/* rgb */ color: rgb(99, 142, 237);
/* oklch */ color: oklch(66.0% 0.150 264.3);

Tailwind

colors: {
  custom: {
    50: '#9aaef3',
    500: '#638eed',
    950: '#000000',
  },
}

SCSS

$custom: #638eed;
$custom-light: #9aaef3;
$custom-dark: #000000;

JSON

{
  "hex": "#638eed",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 237
  },
  "hsl": {
    "h": 221.304,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.6595,
    "c": 0.14957,
    "h": 264.3
  },
  "luminance": 0.28113
}

Semantic roles & 50–950 ramp

primary

#638EED

secondary

#EDDEBF

accent

#9A0ADC

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #638EED

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

Preview Lab → · Contrast checker → · Palette generator →