#636ACE#636ACE

#636ACE is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.8% C 0.152 H 277.4°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#636ACE
RGB	rgb(99, 106, 206)
HSL	hsl(236, 52%, 60%)
HSV	hsv(236, 52%, 81%)
CMYK	cmyk(51.9%, 48.5%, 0%, 19.2%)
CIE-LAB	lab(48.78, 25.13, -52.84)
CIE-LCH	lch(48.78, 58.51, 295.44°)
OKLab	oklab(56.82% 0.0195 -0.1505)
OKLCH	oklch(56.82% 0.152 277.4)
XYZ	xyz(21.4367, 17.4156, 60.6125)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636ACE #CEC763

analogous

#639FCE #636ACE #9263CE

triadic

#636ACE #CE636A #6ACE63

tetradic

#636ACE #CE639F #CEC763 #63CE92

square

#636ACE #CE639F #CEC763 #63CE92

split-complementary

#636ACE #CE9263 #9FCE63

monochromatic

#2C328B #3A43BA #636ACE #9296DD #C0C3EB

Accessibility & contrast

On white

4.68

#636ACE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#636ACE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636ACE

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636ACE	#FFFFFF	#000000	##FFFFFF
##636ACE	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B78D2

Deuteranopia (green-blind)

#3070CC

Tritanopia (blue-blind)

#358092

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #636ace;
/* rgb */ color: rgb(99, 106, 206);
/* oklch */ color: oklch(56.8% 0.152 277.4);

Tailwind

colors: {
  custom: {
    50: '#9794dd',
    500: '#636ace',
    950: '#000000',
  },
}

SCSS

$custom: #636ace;
$custom-light: #9794dd;
$custom-dark: #000000;

JSON

{
  "hex": "#636ace",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 206
  },
  "hsl": {
    "h": 236.075,
    "s": 52.195,
    "l": 59.804
  },
  "oklch": {
    "l": 0.56818,
    "c": 0.1518,
    "h": 277.4
  },
  "luminance": 0.17417
}

Semantic roles & 50–950 ramp

primary

#636ACE

secondary

#DBD8B2

accent

#D24CDC

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636ACE

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

Preview Lab → · Contrast checker → · Palette generator →