#646E33
Closest named color: Dark Moss Green (#606C38). oklch(51.6% 0.083 117.4), rgb(100, 110, 51).
Aa
White text reads best on this color (5.49:1).
About this color
#646E33 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.083 and its hue 117°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.011 away. White text reads best on it, at 5.49:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #646E33 |
| RGB | rgb(100, 110, 51) |
| HSL | hsl(70, 37%, 32%) |
| OKLCH | oklch(51.6% 0.083 117.4) |
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 #646E33 | 5.49:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #646E33 | 3.82:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #646E33 text on white | 5.49:1 | AA | Lc 77.4 | Fine for body text |
| #646E33 text on black | 3.82:1 | AA large text | Lc -24.4 | 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
#D8DBCB
oklch(88.5% 0.022 115.5)
-
Step 300
300
#BEC4A7
oklch(80.8% 0.04 116.8)
-
Step 400
400
#9DA678
oklch(70.6% 0.064 117.1)
-
Step 500
500
#859055
oklch(63% 0.082 117.5)
-
Step 600
600
#6F7A3A
oklch(55.5% 0.089 117.5)
-
Step 700
700 (this color)
#646E33
oklch(51.6% 0.083 117.4)
-
Step 800
800
#4C5425
oklch(42.7% 0.07 117.4)
-
Step 900
900
#3F4523
oklch(37.6% 0.053 117.3)
-
Step 950
950
#252915
oklch(27.1% 0.035 118)
#646E33 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) | #75692E | 0.028 |
| Deuteranopia (no green cones) | #746936 | 0.029 |
| Tritanopia (no blue cones) | #696961 | 0.071 |
| Achromatopsia (no color) | #696969 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646E33
#646E33
oklch(51.6% 0.083 117.4)
- #6D5D92
#6D5D92
oklch(51.6% 0.084 297.3)
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 #646E33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.011
- Muddy Green #657432 ΔE 0.019
- Dark Olive Green #556B2F ΔE 0.025
- Brown Green #706C11 ΔE 0.028
- Browny Green #6F6C0A ΔE 0.029
- Mud Green #606602 ΔE 0.038
- Military Green #667C3E ΔE 0.041
- Camo Green #526525 ΔE 0.042
Use #646E33 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.