#66A145
Closest named color: Muted Green (#5FA052). oklch(64.8% 0.139 135.7), rgb(102, 161, 69).
Aa
Black text reads best on this color (6.74:1).
About this color
#66A145 is a medium-light, moderately saturated green. In OKLCH its lightness is 65%, its chroma 0.139 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muted Green (#5FA052), ΔE 0.015 away. Black text reads best on it, at 6.74:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Muted Green (#5FA052) |
| Black text | 6.74:1 |
| White text | 3.11:1 |
Values
| HEX | #66A145 |
| RGB | rgb(102, 161, 69) |
| HSL | hsl(98, 40%, 45%) |
| OKLCH | oklch(64.8% 0.139 135.7) |
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 #66A145 | 3.11:1 | AA large text | Lc -63.3 | Content text, not long reading |
| Black text on #66A145 | 6.74:1 | AA | Lc 46.1 | Large or bold text, headings |
| #66A145 text on white | 3.11:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #66A145 text on black | 6.74:1 | AA | Lc -43.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE0
oklch(93.6% 0.02 135.8)
-
Step 200
200
#CEDFC7
oklch(88.4% 0.037 136.5)
-
Step 300
300
#ADCB9F
oklch(80.8% 0.068 135.8)
-
Step 400
400
#82B06A
oklch(70.7% 0.109 135.5)
-
Step 500
500 (this color)
#66A145
oklch(64.8% 0.139 135.7)
-
Step 600
600
#47861A
oklch(55.7% 0.151 135.7)
-
Step 700
700
#387109
oklch(49% 0.14 135.6)
-
Step 800
800
#2F5C0E
oklch(42.6% 0.116 135.5)
-
Step 900
900
#2A4C15
oklch(37.7% 0.091 135.6)
-
Step 950
950
#192D0E
oklch(27.1% 0.058 135.8)
#66A145 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) | #A6953C | 0.087 |
| Deuteranopia (no green cones) | #9E904C | 0.088 |
| Tritanopia (no blue cones) | #659B8D | 0.101 |
| Achromatopsia (no color) | #929292 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A145
#66A145
oklch(64.8% 0.139 135.7)
- #AF72C7
#AF72C7
oklch(64.8% 0.138 315.9)
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 #66A145, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Green #5FA052 ΔE 0.015
- Flat Green #699D4C ΔE 0.016
- Off Green #6BA353 ΔE 0.017
- Fern #63A950 ΔE 0.022
- Mid Green #50A747 ΔE 0.025
- Leaf #71AA34 ΔE 0.035
- Dark Pastel Green #56AE57 ΔE 0.036
- Asparagus #77AB56 ΔE 0.039
Use #66A145 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.