#636CFF#636CFF

#636CFF is a mid, highly saturated blue. Relative luminance 0.206; OKLCH L 60.6% C 0.215 H 275.3°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#636CFF
RGB	rgb(99, 108, 255)
HSL	hsl(237, 100%, 69%)
HSV	hsv(237, 61%, 100%)
CMYK	cmyk(61.2%, 57.6%, 0%, 0%)
CIE-LAB	lab(52.50, 39.59, -74.37)
CIE-LCH	lch(52.50, 84.25, 298.03°)
OKLab	oklab(60.63% 0.0199 -0.2139)
OKLCH	oklch(60.63% 0.215 275.3)
XYZ	xyz(28.5522, 20.5955, 97.0590)
Luminance	0.2060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CFF #FFF663

analogous

#63BAFF #636CFF #A863FF

triadic

#636CFF #FF636C #6CFF63

tetradic

#636CFF #FF63BA #FFF663 #63FFA8

square

#636CFF #FF63BA #FFF663 #63FFA8

split-complementary

#636CFF #FFA863 #BAFF63

monochromatic

#000DE8 #2632FF #636CFF #A0A6FF #DDDFFF

Accessibility & contrast

On white

4.10

#636CFF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#636CFF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CFF

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CFF	#FFFFFF	#000000	##000000
##636CFF	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0084FF

Deuteranopia (green-blind)

#0077FC

Tritanopia (blue-blind)

#0090AB

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #636cff;
/* rgb */ color: rgb(99, 108, 255);
/* oklch */ color: oklch(60.6% 0.215 275.3);

Tailwind

colors: {
  custom: {
    50: '#9e96ff',
    500: '#636cff',
    950: '#000000',
  },
}

SCSS

$custom: #636cff;
$custom-light: #9e96ff;
$custom-dark: #000000;

JSON

{
  "hex": "#636cff",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 255
  },
  "hsl": {
    "h": 236.538,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.60634,
    "c": 0.21478,
    "h": 275.3
  },
  "luminance": 0.20598
}

Semantic roles & 50–950 ramp

primary

#636CFF

secondary

#F5F3C8

accent

#D800E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #636CFF

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

Preview Lab → · Contrast checker → · Palette generator →