#638EEA#638EEA

#638EEA is a light, vivid blue. Relative luminance 0.279; OKLCH L 65.8% C 0.146 H 263.9°. Best body text is #000000 at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#638EEA
RGB	rgb(99, 142, 234)
HSL	hsl(221, 76%, 65%)
HSV	hsv(221, 58%, 92%)
CMYK	cmyk(57.7%, 39.3%, 0%, 8.2%)
CIE-LAB	lab(59.83, 12.30, -50.96)
CIE-LCH	lch(59.83, 52.43, 283.57°)
OKLab	oklab(65.78% -0.0154 -0.1447)
OKLCH	oklch(65.78% 0.146 263.9)
XYZ	xyz(29.6648, 27.9367, 81.6550)
Luminance	0.2794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EEA #EABF63

analogous

#63D1EA #638EEA #7B63EA

triadic

#638EEA #EA638E #8EEA63

tetradic

#638EEA #EA63D1 #EABF63 #63EA7B

square

#638EEA #EA63D1 #EABF63 #63EA7B

split-complementary

#638EEA #EA7B63 #D1EA63

monochromatic

#194CBA #2D67E3 #638EEA #99B5F1 #CFDCF9

Accessibility & contrast

On white

3.19

#638EEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.59

#638EEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EEA

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EEA	#FFFFFF	#000000	##000000
##638EEA	1.00	3.19	6.59	6.59
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.59	21.00	1.00	1.00
##000000	6.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6797EE

Deuteranopia (green-blind)

#558AE8

Tritanopia (blue-blind)

#00A2B1

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #638eea;
/* rgb */ color: rgb(99, 142, 234);
/* oklch */ color: oklch(65.8% 0.146 263.9);

Tailwind

colors: {
  custom: {
    50: '#99aef1',
    500: '#638eea',
    950: '#000000',
  },
}

SCSS

$custom: #638eea;
$custom-light: #99aef1;
$custom-dark: #000000;

JSON

{
  "hex": "#638eea",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 234
  },
  "hsl": {
    "h": 220.889,
    "s": 76.271,
    "l": 65.294
  },
  "oklch": {
    "l": 0.65777,
    "c": 0.14552,
    "h": 263.9
  },
  "luminance": 0.27939
}

Semantic roles & 50–950 ramp

primary

#638EEA

secondary

#EBDDBE

accent

#980DD8

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0F1017

muted

#7E7F85

Preview Lab

Preview with #638EEA

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

Preview Lab → · Contrast checker → · Palette generator →