#66A733
Closest named color: Leaf (#71AA34). oklch(66.1% 0.162 134.2), rgb(102, 167, 51).
Aa
Black text reads best on this color (7.14:1).
About this color
#66A733 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.162 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leaf (#71AA34), ΔE 0.016 away. Black text reads best on it, at 7.14:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Leaf (#71AA34) |
| Black text | 7.14:1 |
| White text | 2.94:1 |
Values
| HEX | #66A733 |
| RGB | rgb(102, 167, 51) |
| HSL | hsl(94, 53%, 43%) |
| OKLCH | oklch(66.1% 0.162 134.2) |
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 #66A733 | 2.94:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #66A733 | 7.14:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #66A733 text on white | 2.94:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #66A733 text on black | 7.14:1 | AAA | Lc -46.1 | 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 500.
-
Step 50
50
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E4EEDE
oklch(93.7% 0.024 133.5)
-
Step 200
200
#CDE0C3
oklch(88.5% 0.044 134.7)
-
Step 300
300
#ACCC98
oklch(80.8% 0.079 133.7)
-
Step 400
400
#7FB25D
oklch(70.8% 0.127 134.1)
-
Step 500
500 (this color)
#66A733
oklch(66.1% 0.162 134.2)
-
Step 600
600
#488600
oklch(55.6% 0.16 134.1)
-
Step 700
700
#3B7100
oklch(49.2% 0.142 134.3)
-
Step 800
800
#305C00
oklch(42.6% 0.122 134)
-
Step 900
900
#284D03
oklch(37.8% 0.106 134)
-
Step 950
950
#182D07
oklch(27% 0.066 133.9)
#66A733 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) | #AD9A22 | 0.095 |
| Deuteranopia (no green cones) | #A5953D | 0.096 |
| Tritanopia (no blue cones) | #65A190 | 0.118 |
| Achromatopsia (no color) | #969696 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A733
#66A733
oklch(66.1% 0.162 134.2)
- #B670D7
#B670D7
oklch(66.1% 0.163 314.1)
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 #66A733, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leaf #71AA34 ΔE 0.016
- Grass #5CAC2D ΔE 0.018
- Mid Green #50A747 ΔE 0.023
- Fern #63A950 ΔE 0.025
- Leaf Green #5CA904 ΔE 0.027
- Dark Pastel Green #56AE57 ΔE 0.032
- Medium Green #39AD48 ΔE 0.035
- Off Green #6BA353 ΔE 0.037
Use #66A733 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.