#636AAA#636AAA

#636AAA is a mid, moderate blue. Relative luminance 0.159; OKLCH L 54.7% C 0.100 H 277.8°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#636AAA
RGB	rgb(99, 106, 170)
HSL	hsl(234, 29%, 53%)
HSV	hsv(234, 42%, 67%)
CMYK	cmyk(41.8%, 37.6%, 0%, 33.3%)
CIE-LAB	lab(46.79, 14.08, -35.17)
CIE-LCH	lch(46.79, 37.88, 291.82°)
OKLab	oklab(54.66% 0.0136 -0.0988)
OKLCH	oklch(54.66% 0.1 277.8)
XYZ	xyz(17.5532, 15.8622, 40.1592)
Luminance	0.1586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AAA #AAA363

analogous

#638DAA #636AAA #8063AA

triadic

#636AAA #AA636A #6AAA63

tetradic

#636AAA #AA638D #AAA363 #63AA80

square

#636AAA #AA638D #AAA363 #63AA80

split-complementary

#636AAA #AA8063 #8DAA63

monochromatic

#34385F #494F87 #636AAA #8B90C0 #B2B6D5

Accessibility & contrast

On white

5.03

#636AAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#636AAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636AAA

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AAA	#FFFFFF	#000000	##FFFFFF
##636AAA	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5472AD

Deuteranopia (green-blind)

#4F6CA9

Tritanopia (blue-blind)

#4D7782

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #636aaa;
/* rgb */ color: rgb(99, 106, 170);
/* oklch */ color: oklch(54.7% 0.100 277.8);

Tailwind

colors: {
  custom: {
    50: '#9294c3',
    500: '#636aaa',
    950: '#000000',
  },
}

SCSS

$custom: #636aaa;
$custom-light: #9294c3;
$custom-dark: #000000;

JSON

{
  "hex": "#636aaa",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 170
  },
  "hsl": {
    "h": 234.085,
    "s": 29.461,
    "l": 52.745
  },
  "oklch": {
    "l": 0.5466,
    "c": 0.09975,
    "h": 277.8
  },
  "luminance": 0.15863
}

Semantic roles & 50–950 ramp

primary

#636AAA

secondary

#C4C1A5

accent

#BC62C6

background

#F9F9FC

surface

#F1F1F8

border

#CBCBD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #636AAA

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

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