#646C4C#646C4C

#646C4C is a mid, muted yellow-green. Relative luminance 0.140; OKLCH L 51.5% C 0.049 H 119.6°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#646C4C
RGB	rgb(100, 108, 76)
HSL	hsl(75, 17%, 36%)
HSV	hsv(75, 30%, 42%)
CMYK	cmyk(7.4%, 0%, 29.6%, 57.6%)
CIE-LAB	lab(44.17, -9.06, 16.94)
CIE-LCH	lch(44.17, 19.21, 118.15°)
OKLab	oklab(51.55% -0.0241 0.0426)
OKLCH	oklch(51.55% 0.049 119.6)
XYZ	xyz(11.9225, 13.9563, 8.9018)
Luminance	0.1396 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C4C #544C6C

analogous

#6C644C #646C4C #546C4C

triadic

#646C4C #4C646C #6C4C64

tetradic

#646C4C #4C6C64 #544C6C #6C4C54

square

#646C4C #4C6C64 #544C6C #6C4C54

split-complementary

#646C4C #4C546C #644C6C

monochromatic

#212419 #434833 #646C4C #859065 #A2AB87

Accessibility & contrast

On white

5.54

#646C4C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#646C4C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C4C

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C4C	#FFFFFF	#000000	##FFFFFF
##646C4C	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#70684A

Deuteranopia (green-blind)

#6F694D

Tritanopia (blue-blind)

#676964

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #646c4c;
/* rgb */ color: rgb(100, 108, 76);
/* oklch */ color: oklch(51.5% 0.049 119.6);

Tailwind

colors: {
  custom: {
    50: '#90967e',
    500: '#646c4c',
    950: '#000000',
  },
}

SCSS

$custom: #646c4c;
$custom-light: #90967e;
$custom-dark: #000000;

JSON

{
  "hex": "#646c4c",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 76
  },
  "hsl": {
    "h": 75,
    "s": 17.391,
    "l": 36.078
  },
  "oklch": {
    "l": 0.51549,
    "c": 0.04895,
    "h": 119.6
  },
  "luminance": 0.13956
}

Semantic roles & 50–950 ramp

primary

#646C4C

secondary

#837C98

accent

#6EBA81

background

#F8F9F7

surface

#F0F1EE

border

#CBCBC9

text

#0C0D0A

muted

#7D7E7C

Preview Lab

Preview with #646C4C

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

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