#646647#646647

#646647 is a mid, muted yellow. Relative luminance 0.127; OKLCH L 50.0% C 0.046 H 111.1°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#646647
RGB	rgb(100, 102, 71)
HSL	hsl(64, 18%, 34%)
HSV	hsv(64, 30%, 40%)
CMYK	cmyk(2%, 0%, 30.4%, 60%)
CIE-LAB	lab(42.26, -6.39, 17.32)
CIE-LCH	lch(42.26, 18.46, 110.24°)
OKLab	oklab(50% -0.0167 0.0434)
OKLCH	oklch(50% 0.046 111.1)
XYZ	xyz(11.1442, 12.6671, 7.8179)
Luminance	0.1267 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646647 #494766

analogous

#665947 #646647 #556647

triadic

#646647 #476466 #664764

tetradic

#646647 #476659 #494766 #664755

square

#646647 #476659 #494766 #664755

split-complementary

#646647 #475566 #594766

monochromatic

#1D1E15 #41422E #646647 #878A60 #A4A780

Accessibility & contrast

On white

5.94

#646647 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#646647 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646647

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646647	#FFFFFF	#000000	##FFFFFF
##646647	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B6345

Deuteranopia (green-blind)

#6B6448

Tritanopia (blue-blind)

#68625E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #646647;
/* rgb */ color: rgb(100, 102, 71);
/* oklch */ color: oklch(50.0% 0.046 111.1);

Tailwind

colors: {
  custom: {
    50: '#90917a',
    500: '#646647',
    950: '#000000',
  },
}

SCSS

$custom: #646647;
$custom-light: #90917a;
$custom-dark: #000000;

JSON

{
  "hex": "#646647",
  "rgb": {
    "r": 100,
    "g": 102,
    "b": 71
  },
  "hsl": {
    "h": 63.871,
    "s": 17.919,
    "l": 33.922
  },
  "oklch": {
    "l": 0.49996,
    "c": 0.04647,
    "h": 111.1
  },
  "luminance": 0.12667
}

Semantic roles & 50–950 ramp

primary

#646647

secondary

#777594

accent

#6DBB72

background

#F8F8F7

surface

#F0F0ED

border

#CBCBC8

text

#0C0C09

muted

#7D7D7B

Preview Lab

Preview with #646647

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

Preview Lab → · Contrast checker → · Palette generator →