#666A4D
Closest named color: Dark Moss Green (#606C38). oklch(51.3% 0.044 114.3), rgb(102, 106, 77).
Aa
White text reads best on this color (5.62:1).
About this color
#666A4D is a medium-dark, muted yellow. In OKLCH its lightness is 51%, its chroma 0.044 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.033 away. White text reads best on it, at 5.62:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #666A4D |
| RGB | rgb(102, 106, 77) |
| HSL | hsl(68, 16%, 36%) |
| OKLCH | oklch(51.3% 0.044 114.3) |
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 #666A4D | 5.62:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #666A4D | 3.73:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #666A4D text on white | 5.62:1 | AA | Lc 78.1 | Fine for body text |
| #666A4D text on black | 3.73:1 | AA large text | Lc -23.6 | 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
#E9EAE6
oklch(93.5% 0.005 117.9)
-
Step 200
200
#D9DAD1
oklch(88.5% 0.012 111.8)
-
Step 300
300
#C0C2B3
oklch(80.8% 0.021 113)
-
Step 400
400
#A0A38C
oklch(70.7% 0.033 113.3)
-
Step 500
500
#898D6F
oklch(63.2% 0.043 113.8)
-
Step 600
600
#727757
oklch(55.6% 0.047 115.2)
-
Step 700
700 (this color)
#666A4D
oklch(51.3% 0.044 114.3)
-
Step 800
800
#4E513B
oklch(42.6% 0.035 114.2)
-
Step 900
900
#414332
oklch(37.6% 0.028 113.2)
-
Step 950
950
#26281E
oklch(27.1% 0.018 116.8)
#666A4D 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) | #6E674B | 0.014 |
| Deuteranopia (no green cones) | #6E684E | 0.014 |
| Tritanopia (no blue cones) | #696762 | 0.037 |
| Achromatopsia (no color) | #676767 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666A4D
#666A4D
oklch(51.3% 0.044 114.3)
- #68627E
#68627E
oklch(51.2% 0.044 294.6)
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 #666A4D, 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 0.040
- Dim Gray #696969 ΔE 0.045
- Grey Brown #7F7053 ΔE 0.046
- Dirt Brown #836539 ΔE 0.049
- Dark Olive Green #556B2F ΔE 0.051
- Muddy Green #657432 ΔE 0.053
- Dull Brown #876E4B ΔE 0.055
Use #666A4D 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.