#636660#636660

#636660 is a mid, near-neutral grey. Relative luminance 0.130; OKLCH L 50.6% C 0.010 H 128.7°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#636660
RGB	rgb(99, 102, 96)
HSL	hsl(90, 3%, 39%)
HSV	hsv(90, 6%, 40%)
CMYK	cmyk(2.9%, 0%, 5.9%, 60%)
CIE-LAB	lab(42.76, -2.40, 2.98)
CIE-LCH	lch(42.76, 3.83, 128.83°)
OKLab	oklab(50.57% -0.0063 0.0078)
OKLCH	oklch(50.57% 0.01 128.7)
XYZ	xyz(12.0079, 12.9999, 12.9407)
Luminance	0.1300 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636660 #636066

analogous

#666660 #636660 #606660

triadic

#636660 #606366 #666063

tetradic

#636660 #606666 #636066 #666060

square

#636660 #606666 #636066 #666060

split-complementary

#636660 #606066 #666066

monochromatic

#262725 #444642 #636660 #82857E #A0A39D

Accessibility & contrast

On white

5.83

#636660 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#636660 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636660

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636660	#FFFFFF	#000000	##FFFFFF
##636660	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#676560

Deuteranopia (green-blind)

#666560

Tritanopia (blue-blind)

#636564

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #636660;
/* rgb */ color: rgb(99, 102, 96);
/* oklch */ color: oklch(50.6% 0.010 128.7);

Tailwind

colors: {
  custom: {
    50: '#8f918d',
    500: '#636660',
    950: '#000000',
  },
}

SCSS

$custom: #636660;
$custom-light: #8f918d;
$custom-dark: #000000;

JSON

{
  "hex": "#636660",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 96
  },
  "hsl": {
    "h": 90,
    "s": 3.03,
    "l": 38.824
  },
  "oklch": {
    "l": 0.5057,
    "c": 0.01002,
    "h": 128.7
  },
  "luminance": 0.13
}

Semantic roles & 50–950 ramp

primary

#636660

secondary

#918F93

accent

#7CAC94

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0C0C

muted

#7D7D7D

Preview Lab

Preview with #636660

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

Preview Lab → · Contrast checker → · Palette generator →