#66AF2F
Closest named color: Grass (#5CAC2D). oklch(68.1% 0.175 134.8), rgb(102, 175, 47).
Aa
Black text reads best on this color (7.73:1).
About this color
#66AF2F is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.175 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.014 away. Black text reads best on it, at 7.73:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.73:1 |
| White text | 2.71:1 |
Values
| HEX | #66AF2F |
| RGB | rgb(102, 175, 47) |
| HSL | hsl(94, 58%, 44%) |
| OKLCH | oklch(68.1% 0.175 134.8) |
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 #66AF2F | 2.71:1 | Fails | Lc -57.5 | Large or bold text, headings |
| Black text on #66AF2F | 7.73:1 | AAA | Lc 51.7 | Large or bold text, headings |
| #66AF2F text on white | 2.71:1 | Fails | Lc 52.3 | Large or bold text, headings |
| #66AF2F text on black | 7.73:1 | AAA | Lc -49.5 | Large or bold text, headings |
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 400.
-
Step 50
50
#F1F8EE
oklch(97.1% 0.015 136.1)
-
Step 100
100
#E1EFDA
oklch(93.6% 0.032 135)
-
Step 200
200
#C8E3BB
oklch(88.5% 0.061 135.5)
-
Step 300
300
#A2D188
oklch(81% 0.11 134.9)
-
Step 400
400 (this color)
#66AF2F
oklch(68.1% 0.175 134.8)
-
Step 500
500
#54A000
oklch(63.1% 0.184 134.7)
-
Step 600
600
#458600
oklch(55.5% 0.161 134.8)
-
Step 700
700
#397100
oklch(49.1% 0.143 134.9)
-
Step 800
800
#2E5D00
oklch(42.8% 0.125 134.8)
-
Step 900
900
#254D00
oklch(37.6% 0.109 134.8)
-
Step 950
950
#142E00
oklch(27% 0.078 134.6)
#66AF2F 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) | #B6A117 | 0.104 |
| Deuteranopia (no green cones) | #AC9B3B | 0.105 |
| Tritanopia (no blue cones) | #65A896 | 0.128 |
| Achromatopsia (no color) | #9D9D9D | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66AF2F
#66AF2F
oklch(68.1% 0.175 134.8)
- #C072E2
#C072E2
oklch(68% 0.176 314.7)
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 #66AF2F, closest first.
No curated palette has a color within ΔE 0.04 of #66AF2F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.014
- Leaf #71AA34 ΔE 0.019
- Leafy Green #51B73B ΔE 0.025
- Leaf Green #5CA904 ΔE 0.026
- Dark Pastel Green #56AE57 ΔE 0.036
- Avocado Green #87A922 ΔE 0.037
- Fern #63A950 ΔE 0.037
- Medium Green #39AD48 ΔE 0.038
Use #66AF2F 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.