#646C5C#646C5C
#646C5C is a mid, muted yellow-green. Relative luminance 0.142; OKLCH L 52.0% C 0.026 H 129.0°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).
Color values
| HEX | #646C5C |
|---|---|
| RGB | rgb(100, 108, 92) |
| HSL | hsl(90, 8%, 39%) |
| HSV | hsv(90, 15%, 42%) |
| CMYK | cmyk(7.4%, 0%, 14.8%, 57.6%) |
| CIE-LAB | lab(44.53, -6.29, 7.93) |
| CIE-LCH | lch(44.53, 10.12, 128.44°) |
| OKLab | oklab(51.95% -0.0166 0.0205) |
| OKLCH | oklch(51.95% 0.026 129) |
| XYZ | xyz(12.5496, 14.2071, 12.2042) |
| Luminance | 0.1421 (WCAG relative) |
| Temperature | neutral |
| Family | yellow-green |
Closest named colors
Dimgray
#696969
ΔE00 9.65
Medium Grey
#7D7F7C
ΔE00 11.20
Gunmetal (survey)
#536267
ΔE00 11.61
Grey Brown
#7F7053
ΔE00 12.23
Greyish Brown
#7A6A4F
ΔE00 12.38
Flint
#6F7A80
ΔE00 13.03
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#646C5C #645C6C
analogous
#6C6C5C #646C5C #5C6C5C
triadic
#646C5C #5C646C #6C5C64
tetradic
#646C5C #5C6C6C #645C6C #6C5C5C
square
#646C5C #5C6C6C #645C6C #6C5C5C
split-complementary
#646C5C #5C5C6C #6C5C6C
monochromatic
#272A24 #454B40 #646C5C #838D79 #A1A99A
Accessibility & contrast
On white
5.47
#646C5C on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.84
#646C5C on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #646C5C
5.47:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##646C5C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##646C5C | 1.00 | 5.47 | 3.84 | 5.47 |
| #FFFFFF | 5.47 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.84 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.47 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6E6A5B
Deuteranopia (green-blind)
#6D695D
Tritanopia (blue-blind)
#656A67
Achromatopsia (no color)
#696969
Design tokens & code
CSS
--color: #646c5c; /* rgb */ color: rgb(100, 108, 92); /* oklch */ color: oklch(52.0% 0.026 129.0);
Tailwind
colors: {
custom: {
50: '#90968a',
500: '#646c5c',
950: '#000000',
},
}SCSS
$custom: #646c5c; $custom-light: #90968a; $custom-dark: #000000;
JSON
{
"hex": "#646c5c",
"rgb": {
"r": 100,
"g": 108,
"b": 92
},
"hsl": {
"h": 90,
"s": 8,
"l": 39.216
},
"oklch": {
"l": 0.51951,
"c": 0.02642,
"h": 129
},
"luminance": 0.14207
}Semantic roles & 50–950 ramp
primary
#646C5C
secondary
#928C98
accent
#77B194
background
#F8F9F8
surface
#F0F1F0
border
#CBCBCB
text
#0C0D0B
muted
#7D7E7C