#636FE3#636FE3

#636FE3 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 59.2% C 0.174 H 275.3°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#636FE3
RGB	rgb(99, 111, 227)
HSL	hsl(234, 70%, 64%)
HSV	hsv(234, 56%, 89%)
CMYK	cmyk(56.4%, 51.1%, 0%, 11%)
CIE-LAB	lab(51.34, 28.76, -60.63)
CIE-LCH	lch(51.34, 67.10, 295.38°)
OKLab	oklab(59.17% 0.0161 -0.1734)
OKLCH	oklch(59.17% 0.174 275.3)
XYZ	xyz(24.6907, 19.5658, 75.1336)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FE3 #E3D763

analogous

#63AFE3 #636FE3 #9763E3

triadic

#636FE3 #E3636F #6FE363

tetradic

#636FE3 #E363AF #E3D763 #63E397

square

#636FE3 #E363AF #E3D763 #63E397

split-complementary

#636FE3 #E39763 #AFE363

monochromatic

#1F2CAD #2F3FDA #636FE3 #979FEC #CBCFF6

Accessibility & contrast

On white

4.27

#636FE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#636FE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FE3

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FE3	#FFFFFF	#000000	##000000
##636FE3	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F80E7

Deuteranopia (green-blind)

#1575E1

Tritanopia (blue-blind)

#14899E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636fe3;
/* rgb */ color: rgb(99, 111, 227);
/* oklch */ color: oklch(59.2% 0.174 275.3);

Tailwind

colors: {
  custom: {
    50: '#9998ec',
    500: '#636fe3',
    950: '#000000',
  },
}

SCSS

$custom: #636fe3;
$custom-light: #9998ec;
$custom-dark: #000000;

JSON

{
  "hex": "#636fe3",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 227
  },
  "hsl": {
    "h": 234.375,
    "s": 69.565,
    "l": 63.922
  },
  "oklch": {
    "l": 0.59168,
    "c": 0.17414,
    "h": 275.3
  },
  "luminance": 0.19568
}

Semantic roles & 50–950 ramp

primary

#636FE3

secondary

#E7E3BA

accent

#C014D2

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #636FE3

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

Preview Lab → · Contrast checker → · Palette generator →