#666647
Closest named color: Dark Moss Green (#606C38). oklch(50.2% 0.046 108), rgb(102, 102, 71).
Aa
White text reads best on this color (5.90:1).
About this color
#666647 is a medium-dark, muted yellow. In OKLCH its lightness is 50%, its chroma 0.046 and its hue 108°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.033 away. White text reads best on it, at 5.90:1.
| Hue family | Yellows |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #666647 |
| RGB | rgb(102, 102, 71) |
| HSL | hsl(60, 18%, 34%) |
| OKLCH | oklch(50.2% 0.046 108) |
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 #666647 | 5.90:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #666647 | 3.55:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #666647 text on white | 5.90:1 | AA | Lc 79.5 | Fine for body text |
| #666647 text on black | 3.55:1 | AA large text | Lc -22.3 | 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
#EAEAE5
oklch(93.6% 0.007 106.5)
-
Step 200
200
#DADAD1
oklch(88.6% 0.012 106.6)
-
Step 300
300
#C2C2B2
oklch(81% 0.022 106.9)
-
Step 400
400
#A2A389
oklch(70.8% 0.037 109.1)
-
Step 500
500
#8C8C6C
oklch(63.1% 0.046 107.6)
-
Step 600
600
#767654
oklch(55.7% 0.05 107.9)
-
Step 700
700 (this color)
#666647
oklch(50.2% 0.046 108)
-
Step 800
800
#515138
oklch(42.8% 0.039 107.9)
-
Step 900
900
#434331
oklch(37.7% 0.029 107.7)
-
Step 950
950
#27271D
oklch(26.9% 0.018 107.5)
#666647 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) | #6B6345 | 0.011 |
| Deuteranopia (no green cones) | #6C6548 | 0.010 |
| Tritanopia (no blue cones) | #6A625E | 0.041 |
| Achromatopsia (no color) | #646464 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666647
#666647
oklch(50.2% 0.046 108)
- #62607D
#62607D
oklch(50.2% 0.046 287.8)
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 #666647, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.033
- Dark Taupe #7F684E ΔE 0.044
- Dirt Brown #836539 ΔE 0.048
- Dark Olive Green #556B2F ΔE 0.048
- Dim Gray #696969 ΔE 0.050
- Mud #735C12 ΔE 0.053
- Grey Brown #7F7053 ΔE 0.053
- Camo Green #526525 ΔE 0.055
Use #666647 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.