#646B4E#646B4E

#646B4E is a mid, muted yellow-green. Relative luminance 0.138; OKLCH L 51.4% C 0.045 H 119.0°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#646B4E
RGB	rgb(100, 107, 78)
HSL	hsl(74, 16%, 36%)
HSV	hsv(74, 27%, 42%)
CMYK	cmyk(6.5%, 0%, 27.1%, 58%)
CIE-LAB	lab(43.91, -8.17, 15.40)
CIE-LCH	lch(43.91, 17.44, 117.95°)
OKLab	oklab(51.35% -0.0216 0.0389)
OKLCH	oklch(51.35% 0.045 119)
XYZ	xyz(11.8883, 13.7748, 9.2388)
Luminance	0.1378 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646B4E #554E6B

analogous

#6B644E #646B4E #566B4E

triadic

#646B4E #4E646B #6B4E64

tetradic

#646B4E #4E6B64 #554E6B #6B4E56

square

#646B4E #4E6B64 #554E6B #6B4E56

split-complementary

#646B4E #4E566B #644E6B

monochromatic

#22241A #434834 #646B4E #858E68 #A2AA8A

Accessibility & contrast

On white

5.59

#646B4E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#646B4E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646B4E

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646B4E	#FFFFFF	#000000	##FFFFFF
##646B4E	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F684C

Deuteranopia (green-blind)

#6E684F

Tritanopia (blue-blind)

#676863

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646b4e;
/* rgb */ color: rgb(100, 107, 78);
/* oklch */ color: oklch(51.4% 0.045 119.0);

Tailwind

colors: {
  custom: {
    50: '#90957f',
    500: '#646b4e',
    950: '#000000',
  },
}

SCSS

$custom: #646b4e;
$custom-light: #90957f;
$custom-dark: #000000;

JSON

{
  "hex": "#646b4e",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 78
  },
  "hsl": {
    "h": 74.483,
    "s": 15.676,
    "l": 36.275
  },
  "oklch": {
    "l": 0.51354,
    "c": 0.04452,
    "h": 119
  },
  "luminance": 0.13775
}

Semantic roles & 50–950 ramp

primary

#646B4E

secondary

#847E97

accent

#6FB881

background

#F8F9F7

surface

#F0F1EE

border

#CBCBC9

text

#0C0D0A

muted

#7D7E7C

Preview Lab

Preview with #646B4E

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

Preview Lab → · Contrast checker → · Palette generator →