#666B2F
Closest named color: Dark Moss Green (#606C38). oklch(51% 0.083 113.3), rgb(102, 107, 47).
Aa
White text reads best on this color (5.66:1).
About this color
#666B2F is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.083 and its hue 113°. 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 5.66:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #666B2F |
| RGB | rgb(102, 107, 47) |
| HSL | hsl(65, 39%, 30%) |
| OKLCH | oklch(51% 0.083 113.3) |
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 #666B2F | 5.66:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #666B2F | 3.70:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #666B2F text on white | 5.66:1 | AA | Lc 78.3 | Fine for body text |
| #666B2F text on black | 3.70:1 | AA large text | Lc -23.5 | 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
#EAEBE2
oklch(93.7% 0.012 111.8)
-
Step 200
200
#D9DBCA
oklch(88.5% 0.023 112.3)
-
Step 300
300
#C0C4A7
oklch(80.9% 0.04 113.7)
-
Step 400
400
#A0A577
oklch(70.6% 0.064 113.1)
-
Step 500
500
#898F53
oklch(63.1% 0.082 113.4)
-
Step 600
600
#737937
oklch(55.6% 0.09 113.6)
-
Step 700
700 (this color)
#666B2F
oklch(51% 0.083 113.3)
-
Step 800
800
#4F5324
oklch(42.7% 0.068 113.3)
-
Step 900
900
#414522
oklch(37.7% 0.054 114.4)
-
Step 950
950
#262814
oklch(26.9% 0.034 113.4)
#666B2F 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) | #726629 | 0.022 |
| Deuteranopia (no green cones) | #726832 | 0.022 |
| Tritanopia (no blue cones) | #6C655E | 0.074 |
| Achromatopsia (no color) | #676767 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666B2F
#666B2F
oklch(51% 0.083 113.3)
- #685C91
#685C91
oklch(50.9% 0.083 293.6)
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 #666B2F, 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
- Dark Olive Green #556B2F ΔE 0.025
- Brown Green #706C11 ΔE 0.026
- Muddy Green #657432 ΔE 0.026
- Browny Green #6F6C0A ΔE 0.028
- Mud Green #606602 ΔE 0.033
- Greeny Brown #696006 ΔE 0.036
- Camo Green #526525 ΔE 0.038
Use #666B2F 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.