#666B2B
Closest named color: Dark Moss Green (#606C38). oklch(50.9% 0.087 113.2), rgb(102, 107, 43).
Aa
White text reads best on this color (5.67:1).
About this color
#666B2B is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.087 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 0.014 away. White text reads best on it, at 5.67:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.70:1 |
| White text | 5.67:1 |
Values
| HEX | #666B2B |
| RGB | rgb(102, 107, 43) |
| HSL | hsl(65, 43%, 29%) |
| OKLCH | oklch(50.9% 0.087 113.2) |
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 #666B2B | 5.67:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #666B2B | 3.70:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #666B2B text on white | 5.67:1 | AA | Lc 78.3 | Fine for body text |
| #666B2B 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
#C0C4A5
oklch(80.9% 0.042 113.3)
-
Step 400
400
#A0A675
oklch(70.8% 0.068 113.8)
-
Step 500
500
#898F50
oklch(63% 0.086 113.3)
-
Step 600
600
#737933
oklch(55.6% 0.094 113.5)
-
Step 700
700 (this color)
#666B2B
oklch(50.9% 0.087 113.2)
-
Step 800
800
#4F5321
oklch(42.7% 0.072 113.2)
-
Step 900
900
#424520
oklch(37.8% 0.056 112.9)
-
Step 950
950
#262813
oklch(26.9% 0.036 113.3)
#666B2B 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) | #736624 | 0.023 |
| Deuteranopia (no green cones) | #72682F | 0.022 |
| Tritanopia (no blue cones) | #6C655D | 0.076 |
| Achromatopsia (no color) | #676767 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666B2B
#666B2B
oklch(50.9% 0.087 113.2)
- #685C93
#685C93
oklch(51% 0.086 293.1)
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 #666B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.014
- Brown Green #706C11 ΔE 0.023
- Dark Olive Green #556B2F ΔE 0.024
- Browny Green #6F6C0A ΔE 0.024
- Muddy Green #657432 ΔE 0.025
- Mud Green #606602 ΔE 0.030
- Greeny Brown #696006 ΔE 0.034
- Camo Green #526525 ΔE 0.037
Use #666B2B 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.