#646447
Closest named color: Dark Moss Green (#606C38). oklch(49.5% 0.044 107.9), rgb(100, 100, 71).
Aa
White text reads best on this color (6.07:1).
About this color
#646447 is a medium-dark, muted brown. In OKLCH its lightness is 50%, its chroma 0.044 and its hue 108°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.037 away. White text reads best on it, at 6.07:1.
| Hue family | Browns |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.044) |
| Temperature | warm |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #646447 |
| RGB | rgb(100, 100, 71) |
| HSL | hsl(60, 17%, 34%) |
| OKLCH | oklch(49.5% 0.044 107.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #646447 | 6.07:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #646447 | 3.45:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #646447 text on white | 6.07:1 | AA | Lc 80.4 | Fine for body text |
| #646447 text on black | 3.45:1 | AA large text | Lc -21.5 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F5F5F3
oklch(97% 0.003 106.4)
-
Step 100
100
#EAEAE6
oklch(93.6% 0.005 106.5)
-
Step 200
200
#DADAD1
oklch(88.6% 0.012 106.6)
-
Step 300
300
#C1C2B3
oklch(80.9% 0.021 109.9)
-
Step 400
400
#A2A38B
oklch(70.8% 0.034 109.2)
-
Step 500
500
#8C8C6E
oklch(63.2% 0.043 107.6)
-
Step 600
600
#767656
oklch(55.7% 0.047 107.8)
-
Step 700
700 (this color)
#646447
oklch(49.5% 0.044 107.9)
-
Step 800
800
#51513A
oklch(42.8% 0.036 107.8)
-
Step 900
900
#434332
oklch(37.8% 0.028 107.7)
-
Step 950
950
#27271D
oklch(26.9% 0.018 107.5)
#646447 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #696245 | 0.009 |
| Deuteranopia (no green cones) | #696348 | 0.009 |
| Tritanopia (no blue cones) | #68605C | 0.039 |
| Achromatopsia (no color) | #626262 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646447
#646447
oklch(49.5% 0.044 107.9)
- #605E7A
#605E7A
oklch(49.5% 0.044 287.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #646447, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.037
- Dark Taupe #7F684E ΔE 0.048
- Dark Olive Green #556B2F ΔE 0.050
- Dim Gray #696969 ΔE 0.051
- Dirt Brown #836539 ΔE 0.053
- Mud #735C12 ΔE 0.053
- Camo Green #526525 ΔE 0.055
- Greeny Brown #696006 ΔE 0.057
Use #646447 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.