#636FF0#636FF0

#636FF0 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 60.1% C 0.192 H 275.0°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#636FF0
RGB	rgb(99, 111, 240)
HSL	hsl(235, 82%, 66%)
HSV	hsv(235, 59%, 94%)
CMYK	cmyk(58.8%, 53.8%, 0%, 5.9%)
CIE-LAB	lab(52.19, 32.95, -66.55)
CIE-LCH	lch(52.19, 74.26, 296.34°)
OKLab	oklab(60.07% 0.0169 -0.1908)
OKLCH	oklch(60.07% 0.192 275)
XYZ	xyz(26.5531, 20.3108, 84.9423)
Luminance	0.2031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FF0 #F0E463

analogous

#63B5F0 #636FF0 #9E63F0

triadic

#636FF0 #F0636F #6FF063

tetradic

#636FF0 #F063B5 #F0E463 #63F09E

square

#636FF0 #F063B5 #F0E463 #63F09E

split-complementary

#636FF0 #F09E63 #B5F063

monochromatic

#1322C6 #2B3BEB #636FF0 #9BA3F5 #D3D6FB

Accessibility & contrast

On white

4.15

#636FF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#636FF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FF0

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FF0	#FFFFFF	#000000	##000000
##636FF0	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1683F4

Deuteranopia (green-blind)

#0077ED

Tritanopia (blue-blind)

#008DA5

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636ff0;
/* rgb */ color: rgb(99, 111, 240);
/* oklch */ color: oklch(60.1% 0.192 275.0);

Tailwind

colors: {
  custom: {
    50: '#9b98f6',
    500: '#636ff0',
    950: '#000000',
  },
}

SCSS

$custom: #636ff0;
$custom-light: #9b98f6;
$custom-dark: #000000;

JSON

{
  "hex": "#636ff0",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 240
  },
  "hsl": {
    "h": 234.894,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.60071,
    "c": 0.19157,
    "h": 275
  },
  "luminance": 0.20313
}

Semantic roles & 50–950 ramp

primary

#636FF0

secondary

#EEEAC1

accent

#CC07DF

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FF0

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

Preview Lab → · Contrast checker → · Palette generator →