#646818
Closest named color: Mud Green (#606602). oklch(49.8% 0.1 112.4), rgb(100, 104, 24).
Aa
White text reads best on this color (5.94:1).
About this color
#646818 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 50%, its chroma 0.100 and its hue 112°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mud Green (#606602), ΔE 0.014 away. White text reads best on it, at 5.94:1.
| Hue family | Browns |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Mud Green (#606602) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #646818 |
| RGB | rgb(100, 104, 24) |
| HSL | hsl(63, 63%, 25%) |
| OKLCH | oklch(49.8% 0.1 112.4) |
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 #646818 | 5.94:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #646818 | 3.53:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #646818 text on white | 5.94:1 | AA | Lc 79.6 | Fine for body text |
| #646818 text on black | 3.53:1 | AA large text | Lc -22.2 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#EAEBE1
oklch(93.7% 0.013 111.3)
-
Step 200
200
#D9DBC7
oklch(88.4% 0.027 111.6)
-
Step 300
300
#C1C4A1
oklch(80.9% 0.048 111.4)
-
Step 400
400
#A1A66D
oklch(70.7% 0.078 112.5)
-
Step 500
500
#8A9045
oklch(63.2% 0.099 113)
-
Step 600
600
#757923
oklch(55.6% 0.107 112)
-
Step 700
700 (this color)
#646818
oklch(49.8% 0.1 112.4)
-
Step 800
800
#505315
oklch(42.6% 0.082 112.1)
-
Step 900
900
#424519
oklch(37.7% 0.064 112.7)
-
Step 950
950
#272810
oklch(26.9% 0.04 110.9)
#646818 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) | #706308 | 0.022 |
| Deuteranopia (no green cones) | #71651E | 0.024 |
| Tritanopia (no blue cones) | #6B6159 | 0.090 |
| Achromatopsia (no color) | #646464 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646818
#646818
oklch(49.8% 0.1 112.4)
- #655796
#655796
oklch(49.8% 0.099 292.7)
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 #646818, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Green #606602 ΔE 0.014
- Greeny Brown #696006 ΔE 0.023
- Browny Green #6F6C0A ΔE 0.023
- Brown Green #706C11 ΔE 0.023
- Dark Olive Green #556B2F ΔE 0.025
- Dark Moss Green #606C38 ΔE 0.028
- Camo Green #526525 ΔE 0.030
- Muddy Green #657432 ΔE 0.036
Use #646818 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.