#636FEC#636FEC

#636FEC is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.8% C 0.186 H 275.1°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#636FEC
RGB	rgb(99, 111, 236)
HSL	hsl(235, 78%, 66%)
HSV	hsv(235, 58%, 93%)
CMYK	cmyk(58.1%, 53%, 0%, 7.5%)
CIE-LAB	lab(51.92, 31.66, -64.74)
CIE-LCH	lch(51.92, 72.07, 296.06°)
OKLab	oklab(59.79% 0.0167 -0.1855)
OKLCH	oklch(59.79% 0.186 275.1)
XYZ	xyz(25.9654, 20.0757, 81.8473)
Luminance	0.2008 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FEC #ECE063

analogous

#63B3EC #636FEC #9C63EC

triadic

#636FEC #EC636F #6FEC63

tetradic

#636FEC #EC63B3 #ECE063 #63EC9C

square

#636FEC #EC63B3 #ECE063 #63EC9C

split-complementary

#636FEC #EC9C63 #B3EC63

monochromatic

#1726BE #2C3DE5 #636FEC #9AA1F3 #D0D4F9

Accessibility & contrast

On white

4.19

#636FEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#636FEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FEC

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FEC	#FFFFFF	#000000	##000000
##636FEC	1.00	4.19	5.02	5.02
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2082F0

Deuteranopia (green-blind)

#0076E9

Tritanopia (blue-blind)

#008CA3

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636fec;
/* rgb */ color: rgb(99, 111, 236);
/* oklch */ color: oklch(59.8% 0.186 275.1);

Tailwind

colors: {
  custom: {
    50: '#9b98f3',
    500: '#636fec',
    950: '#000000',
  },
}

SCSS

$custom: #636fec;
$custom-light: #9b98f3;
$custom-dark: #000000;

JSON

{
  "hex": "#636fec",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 236
  },
  "hsl": {
    "h": 234.745,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.59789,
    "c": 0.18626,
    "h": 275.1
  },
  "luminance": 0.20078
}

Semantic roles & 50–950 ramp

primary

#636FEC

secondary

#ECE8BF

accent

#C80BDB

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FEC

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

Preview Lab → · Contrast checker → · Palette generator →