#666B47
Closest named color: Dark Moss Green (#606C38). oklch(51.4% 0.054 114.8), rgb(102, 107, 71).
Aa
White text reads best on this color (5.58:1).
About this color
#666B47 is a medium-dark, muted yellow. In OKLCH its lightness is 51%, its chroma 0.054 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.024 away. White text reads best on it, at 5.58:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.75:1 |
| White text | 5.58:1 |
Values
| HEX | #666B47 |
| RGB | rgb(102, 107, 71) |
| HSL | hsl(68, 20%, 35%) |
| OKLCH | oklch(51.4% 0.054 114.8) |
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 #666B47 | 5.58:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #666B47 | 3.75:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #666B47 text on white | 5.58:1 | AA | Lc 77.9 | Fine for body text |
| #666B47 text on black | 3.75:1 | 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
#E9EAE5
oklch(93.5% 0.007 115.7)
-
Step 200
200
#D8DAD0
oklch(88.4% 0.014 115.9)
-
Step 300
300
#C0C3B0
oklch(81% 0.026 114.3)
-
Step 400
400
#9FA487
oklch(70.7% 0.041 115.4)
-
Step 500
500
#888E69
oklch(63.2% 0.053 115.4)
-
Step 600
600
#727850
oklch(55.7% 0.059 115.3)
-
Step 700
700 (this color)
#666B47
oklch(51.4% 0.054 114.8)
-
Step 800
800
#4E5236
oklch(42.7% 0.044 114.9)
-
Step 900
900
#41442F
oklch(37.8% 0.034 114.7)
-
Step 950
950
#26281B
oklch(27.1% 0.023 115.1)
#666B47 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) | #706845 | 0.017 |
| Deuteranopia (no green cones) | #706849 | 0.018 |
| Tritanopia (no blue cones) | #6A6762 | 0.047 |
| Achromatopsia (no color) | #686868 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666B47
#666B47
oklch(51.4% 0.054 114.8)
- #696183
#696183
oklch(51.3% 0.054 295.2)
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 #666B47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.024
- Dark Olive Green #556B2F ΔE 0.043
- Muddy Green #657432 ΔE 0.043
- Dark Taupe #7F684E ΔE 0.044
- Grey Brown #7F7053 ΔE 0.047
- Dirt Brown #836539 ΔE 0.047
- Brown Green #706C11 ΔE 0.053
- Dim Gray #696969 ΔE 0.054
Use #666B47 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.