#646C2A
Closest named color: Dark Moss Green (#606C38). oklch(51% 0.09 115.5), rgb(100, 108, 42).
Aa
White text reads best on this color (5.64:1).
About this color
#646C2A is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.090 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.015 away. White text reads best on it, at 5.64:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.72:1 |
| White text | 5.64:1 |
Values
| HEX | #646C2A |
| RGB | rgb(100, 108, 42) |
| HSL | hsl(67, 44%, 29%) |
| OKLCH | oklch(51% 0.09 115.5) |
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 #646C2A | 5.64:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #646C2A | 3.72:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #646C2A text on white | 5.64:1 | AA | Lc 78.2 | Fine for body text |
| #646C2A text on black | 3.72:1 | AA large text | Lc -23.6 | 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
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E9EBE2
oklch(93.6% 0.012 116.8)
-
Step 200
200
#D8DBCA
oklch(88.4% 0.023 115)
-
Step 300
300
#BFC4A5
oklch(80.8% 0.043 114.8)
-
Step 400
400
#9EA674
oklch(70.6% 0.069 115.6)
-
Step 500
500
#87904F
oklch(63.1% 0.089 115.5)
-
Step 600
600
#717A32
oklch(55.6% 0.097 115.6)
-
Step 700
700 (this color)
#646C2A
oklch(51% 0.09 115.5)
-
Step 800
800
#4D5420
oklch(42.7% 0.075 116.1)
-
Step 900
900
#40451F
oklch(37.6% 0.058 115.4)
-
Step 950
950
#262913
oklch(27.1% 0.037 115.3)
#646C2A 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) | #736723 | 0.025 |
| Deuteranopia (no green cones) | #73682E | 0.027 |
| Tritanopia (no blue cones) | #6A665E | 0.079 |
| Achromatopsia (no color) | #676767 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646C2A
#646C2A
oklch(51% 0.09 115.5)
- #6A5B94
#6A5B94
oklch(51% 0.09 295.1)
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 #646C2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.015
- Dark Olive Green #556B2F ΔE 0.022
- Brown Green #706C11 ΔE 0.023
- Muddy Green #657432 ΔE 0.023
- Browny Green #6F6C0A ΔE 0.024
- Mud Green #606602 ΔE 0.029
- Greeny Brown #696006 ΔE 0.035
- Camo Green #526525 ΔE 0.036
Use #646C2A 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.