#646D2B
Closest named color: Dark Moss Green (#606C38). oklch(51.2% 0.09 116.2), rgb(100, 109, 43).
Aa
White text reads best on this color (5.57:1).
About this color
#646D2B is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.090 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.016 away. White text reads best on it, at 5.57:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #646D2B |
| RGB | rgb(100, 109, 43) |
| HSL | hsl(68, 43%, 30%) |
| OKLCH | oklch(51.2% 0.09 116.2) |
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 #646D2B | 5.57:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #646D2B | 3.76:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #646D2B text on white | 5.57:1 | AA | Lc 77.8 | Fine for body text |
| #646D2B text on black | 3.76:1 | AA large text | Lc -23.9 | 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
#BFC5A5
oklch(81% 0.044 116)
-
Step 400
400
#9EA674
oklch(70.6% 0.069 115.6)
-
Step 500
500
#86904F
oklch(63% 0.089 116.2)
-
Step 600
600
#707A32
oklch(55.5% 0.097 116.3)
-
Step 700
700 (this color)
#646D2B
oklch(51.2% 0.09 116.2)
-
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
#252913
oklch(27% 0.038 117.4)
#646D2B 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) | #746824 | 0.027 |
| Deuteranopia (no green cones) | #73682F | 0.029 |
| Tritanopia (no blue cones) | #6A675F | 0.079 |
| Achromatopsia (no color) | #686868 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646D2B
#646D2B
oklch(51.2% 0.09 116.2)
- #6C5B95
#6C5B95
oklch(51.2% 0.092 296.5)
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 #646D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.016
- Muddy Green #657432 ΔE 0.020
- Brown Green #706C11 ΔE 0.023
- Dark Olive Green #556B2F ΔE 0.023
- Browny Green #6F6C0A ΔE 0.024
- Mud Green #606602 ΔE 0.030
- Greeny Brown #696006 ΔE 0.038
- Camo Green #526525 ΔE 0.038
Use #646D2B 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.