#636FF8#636FF8

#636FF8 is a mid, highly saturated blue. Relative luminance 0.208; OKLCH L 60.6% C 0.202 H 274.9°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#636FF8
RGB	rgb(99, 111, 248)
HSL	hsl(235, 91%, 68%)
HSV	hsv(235, 60%, 97%)
CMYK	cmyk(60.1%, 55.2%, 0%, 2.7%)
CIE-LAB	lab(52.73, 35.54, -70.13)
CIE-LCH	lch(52.73, 78.62, 296.87°)
OKLab	oklab(60.65% 0.0171 -0.2014)
OKLCH	oklch(60.65% 0.202 274.9)
XYZ	xyz(27.7678, 20.7966, 91.3396)
Luminance	0.2080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FF8 #F8EC63

analogous

#63B9F8 #636FF8 #A163F8

triadic

#636FF8 #F8636F #6FF863

tetradic

#636FF8 #F863B9 #F8EC63 #63F8A1

square

#636FF8 #F863B9 #F8EC63 #63F8A1

split-complementary

#636FF8 #F8A163 #B9F863

monochromatic

#0A1AD7 #2839F5 #636FF8 #9EA5FB #D8DBFD

Accessibility & contrast

On white

4.07

#636FF8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#636FF8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FF8

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FF8	#FFFFFF	#000000	##000000
##636FF8	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0084FD

Deuteranopia (green-blind)

#0078F5

Tritanopia (blue-blind)

#008FA9

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #636ff8;
/* rgb */ color: rgb(99, 111, 248);
/* oklch */ color: oklch(60.6% 0.202 274.9);

Tailwind

colors: {
  custom: {
    50: '#9c98fb',
    500: '#636ff8',
    950: '#000000',
  },
}

SCSS

$custom: #636ff8;
$custom-light: #9c98fb;
$custom-dark: #000000;

JSON

{
  "hex": "#636ff8",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 248
  },
  "hsl": {
    "h": 235.168,
    "s": 91.411,
    "l": 68.039
  },
  "oklch": {
    "l": 0.60645,
    "c": 0.20209,
    "h": 274.9
  },
  "luminance": 0.20799
}

Semantic roles & 50–950 ramp

primary

#636FF8

secondary

#F2EFC5

accent

#D300E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D18

muted

#7F7E86

Preview Lab

Preview with #636FF8

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

Preview Lab → · Contrast checker → · Palette generator →