#638EE3#638EE3

#638EE3 is a light, vivid blue. Relative luminance 0.275; OKLCH L 65.4% C 0.136 H 262.9°. Best body text is #000000 at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#638EE3
RGB	rgb(99, 142, 227)
HSL	hsl(220, 70%, 64%)
HSV	hsv(220, 56%, 89%)
CMYK	cmyk(56.4%, 37.4%, 0%, 11%)
CIE-LAB	lab(59.47, 10.05, -47.64)
CIE-LCH	lch(59.47, 48.69, 281.91°)
OKLab	oklab(65.38% -0.0169 -0.135)
OKLCH	oklch(65.38% 0.136 262.9)
XYZ	xyz(28.6790, 27.5424, 76.4631)
Luminance	0.2754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638EE3 #E3B863

analogous

#63CEE3 #638EE3 #7863E3

triadic

#638EE3 #E3638E #8EE363

tetradic

#638EE3 #E363CE #E3B863 #63E378

square

#638EE3 #E363CE #E3B863 #63E378

split-complementary

#638EE3 #E37863 #CEE363

monochromatic

#1F4FAD #2F68DA #638EE3 #97B4EC #CBD9F6

Accessibility & contrast

On white

3.23

#638EE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.51

#638EE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638EE3

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638EE3	#FFFFFF	#000000	##000000
##638EE3	1.00	3.23	6.51	6.51
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.51	21.00	1.00	1.00
##000000	6.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B96E6

Deuteranopia (green-blind)

#5B8AE1

Tritanopia (blue-blind)

#00A1AE

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #638ee3;
/* rgb */ color: rgb(99, 142, 227);
/* oklch */ color: oklch(65.4% 0.136 262.9);

Tailwind

colors: {
  custom: {
    50: '#98aeec',
    500: '#638ee3',
    950: '#000000',
  },
}

SCSS

$custom: #638ee3;
$custom-light: #98aeec;
$custom-dark: #000000;

JSON

{
  "hex": "#638ee3",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 227
  },
  "hsl": {
    "h": 219.844,
    "s": 69.565,
    "l": 63.922
  },
  "oklch": {
    "l": 0.65383,
    "c": 0.13605,
    "h": 262.9
  },
  "luminance": 0.27545
}

Semantic roles & 50–950 ramp

primary

#638EE3

secondary

#E7D8BA

accent

#9214D2

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #638EE3

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

Preview Lab → · Contrast checker → · Palette generator →