#636699#636699

#636699 is a mid, moderate blue. Relative luminance 0.145; OKLCH L 52.9% C 0.080 H 280.7°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#636699
RGB	rgb(99, 102, 153)
HSL	hsl(237, 21%, 49%)
HSV	hsv(237, 35%, 60%)
CMYK	cmyk(35.3%, 33.3%, 0%, 40%)
CIE-LAB	lab(44.88, 11.61, -28.14)
CIE-LCH	lch(44.88, 30.45, 292.43°)
OKLab	oklab(52.92% 0.0148 -0.0785)
OKLCH	oklch(52.92% 0.08 280.7)
XYZ	xyz(15.6451, 14.4548, 32.0965)
Luminance	0.1446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636699 #999663

analogous

#638199 #636699 #7B6399

triadic

#636699 #996366 #669963

tetradic

#636699 #996381 #999663 #63997B

square

#636699 #996381 #999663 #63997B

split-complementary

#636699 #997B63 #819963

monochromatic

#33344F #4B4D74 #636699 #888AB2 #ADAECA

Accessibility & contrast

On white

5.40

#636699 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#636699 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636699

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636699	#FFFFFF	#000000	##FFFFFF
##636699	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#566C9B

Deuteranopia (green-blind)

#536898

Tritanopia (blue-blind)

#547078

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #636699;
/* rgb */ color: rgb(99, 102, 153);
/* oklch */ color: oklch(52.9% 0.080 280.7);

Tailwind

colors: {
  custom: {
    50: '#9191b7',
    500: '#636699',
    950: '#000000',
  },
}

SCSS

$custom: #636699;
$custom-light: #9191b7;
$custom-dark: #000000;

JSON

{
  "hex": "#636699",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 153
  },
  "hsl": {
    "h": 236.667,
    "s": 21.429,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52917,
    "c": 0.07989,
    "h": 280.7
  },
  "luminance": 0.14455
}

Semantic roles & 50–950 ramp

primary

#636699

secondary

#B8B79F

accent

#B96ABE

background

#F9F8FB

surface

#F1F0F6

border

#CBCBD0

text

#0D0C11

muted

#7E7D80

Preview Lab

Preview with #636699

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

Preview Lab → · Contrast checker → · Palette generator →