#666C30
Closest named color: Dark Moss Green (#606C38). oklch(51.2% 0.083 114.1), rgb(102, 108, 48).
Aa
White text reads best on this color (5.59:1).
About this color
#666C30 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.083 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 0.011 away. White text reads best on it, at 5.59:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #666C30 |
| RGB | rgb(102, 108, 48) |
| HSL | hsl(66, 38%, 31%) |
| OKLCH | oklch(51.2% 0.083 114.1) |
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 #666C30 | 5.59:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #666C30 | 3.75:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #666C30 text on white | 5.59:1 | AA | Lc 77.9 | Fine for body text |
| #666C30 text on black | 3.75:1 | AA large text | Lc -23.8 | 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
#E9EBE2
oklch(93.6% 0.012 116.8)
-
Step 200
200
#D8DBCB
oklch(88.5% 0.022 115.5)
-
Step 300
300
#C0C4A7
oklch(80.9% 0.04 113.7)
-
Step 400
400
#A0A677
oklch(70.8% 0.065 114)
-
Step 500
500
#888F54
oklch(63% 0.081 114.3)
-
Step 600
600
#737937
oklch(55.6% 0.09 113.6)
-
Step 700
700 (this color)
#666C30
oklch(51.2% 0.083 114.1)
-
Step 800
800
#4E5324
oklch(42.6% 0.069 114.4)
-
Step 900
900
#414522
oklch(37.7% 0.054 114.4)
-
Step 950
950
#262814
oklch(26.9% 0.034 113.4)
#666C30 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) | #73672A | 0.023 |
| Deuteranopia (no green cones) | #736833 | 0.024 |
| Tritanopia (no blue cones) | #6C665F | 0.074 |
| Achromatopsia (no color) | #686868 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666C30
#666C30
oklch(51.2% 0.083 114.1)
- #695D92
#695D92
oklch(51.2% 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 #666C30, 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
- Muddy Green #657432 ΔE 0.023
- Dark Olive Green #556B2F ΔE 0.026
- Brown Green #706C11 ΔE 0.026
- Browny Green #6F6C0A ΔE 0.027
- Mud Green #606602 ΔE 0.035
- Greeny Brown #696006 ΔE 0.038
- Camo Green #526525 ΔE 0.040
Use #666C30 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.