#646C43
Closest named color: Dark Moss Green (#606C38). oklch(51.4% 0.061 117.6), rgb(100, 108, 67).
Aa
White text reads best on this color (5.57:1).
About this color
#646C43 is a medium-dark, muted yellow. In OKLCH its lightness is 51%, its chroma 0.061 and its hue 118°. 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 | muted (0.061) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #646C43 |
| RGB | rgb(100, 108, 67) |
| HSL | hsl(72, 23%, 34%) |
| OKLCH | oklch(51.4% 0.061 117.6) |
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 #646C43 | 5.57:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #646C43 | 3.76:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #646C43 text on white | 5.57:1 | AA | Lc 77.8 | Fine for body text |
| #646C43 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE4
oklch(93.7% 0.01 119.6)
-
Step 200
200
#D8DBCF
oklch(88.6% 0.016 118.2)
-
Step 300
300
#BFC3AE
oklch(80.8% 0.029 115.8)
-
Step 400
400
#9EA584
oklch(70.7% 0.047 117.3)
-
Step 500
500
#868F65
oklch(63.2% 0.061 118)
-
Step 600
600
#70794C
oklch(55.7% 0.066 117.8)
-
Step 700
700 (this color)
#646C43
oklch(51.4% 0.061 117.6)
-
Step 800
800
#4D5332
oklch(42.8% 0.051 117)
-
Step 900
900
#40452C
oklch(37.8% 0.041 117.6)
-
Step 950
950
#25281A
oklch(26.9% 0.025 117.9)
#646C43 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) | #716840 | 0.022 |
| Deuteranopia (no green cones) | #706845 | 0.022 |
| Tritanopia (no blue cones) | #686862 | 0.052 |
| Achromatopsia (no color) | #686868 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646C43
#646C43
oklch(51.4% 0.061 117.6)
- #6B6086
#6B6086
oklch(51.4% 0.06 297.5)
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 #646C43, 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
- Dark Olive Green #556B2F ΔE 0.036
- Muddy Green #657432 ΔE 0.036
- Brown Green #706C11 ΔE 0.047
- Browny Green #6F6C0A ΔE 0.049
- Camo Green #526525 ΔE 0.049
- Dark Taupe #7F684E ΔE 0.050
- Dirt Brown #836539 ΔE 0.050
Use #646C43 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.