#636FE9#636FE9

#636FE9 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.6% C 0.182 H 275.2°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#636FE9
RGB	rgb(99, 111, 233)
HSL	hsl(235, 75%, 65%)
HSV	hsv(235, 58%, 91%)
CMYK	cmyk(57.5%, 52.4%, 0%, 8.6%)
CIE-LAB	lab(51.73, 30.69, -63.38)
CIE-LCH	lch(51.73, 70.42, 295.84°)
OKLab	oklab(59.58% 0.0165 -0.1815)
OKLCH	oklch(59.58% 0.182 275.2)
XYZ	xyz(25.5332, 19.9028, 79.5711)
Luminance	0.1991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FE9 #E9DD63

analogous

#63B2E9 #636FE9 #9A63E9

triadic

#636FE9 #E9636F #6FE963

tetradic

#636FE9 #E963B2 #E9DD63 #63E99A

square

#636FE9 #E963B2 #E9DD63 #63E99A

split-complementary

#636FE9 #E99A63 #B2E963

monochromatic

#1A28B8 #2D3DE1 #636FE9 #99A1F1 #CED2F8

Accessibility & contrast

On white

4.22

#636FE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#636FE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FE9

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FE9	#FFFFFF	#000000	##000000
##636FE9	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2681ED

Deuteranopia (green-blind)

#0076E6

Tritanopia (blue-blind)

#008BA1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #636fe9;
/* rgb */ color: rgb(99, 111, 233);
/* oklch */ color: oklch(59.6% 0.182 275.2);

Tailwind

colors: {
  custom: {
    50: '#9a98f1',
    500: '#636fe9',
    950: '#000000',
  },
}

SCSS

$custom: #636fe9;
$custom-light: #9a98f1;
$custom-dark: #000000;

JSON

{
  "hex": "#636fe9",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 233
  },
  "hsl": {
    "h": 234.627,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.5958,
    "c": 0.18224,
    "h": 275.2
  },
  "luminance": 0.19905
}

Semantic roles & 50–950 ramp

primary

#636FE9

secondary

#EBE7BD

accent

#C50ED7

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FE9

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

Preview Lab → · Contrast checker → · Palette generator →