#66A705
Closest named color: Leaf Green (#5CA904). oklch(65.9% 0.181 131.9), rgb(102, 167, 5).
Aa
Black text reads best on this color (7.09:1).
About this color
#66A705 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.181 and its hue 132°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leaf Green (#5CA904), ΔE 0.011 away. Black text reads best on it, at 7.09:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Leaf Green (#5CA904) |
| Black text | 7.09:1 |
| White text | 2.95:1 |
Values
| HEX | #66A705 |
| RGB | rgb(102, 167, 5) |
| HSL | hsl(84, 94%, 34%) |
| OKLCH | oklch(65.9% 0.181 131.9) |
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 #66A705 | 2.95:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #66A705 | 7.09:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #66A705 text on white | 2.95:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #66A705 text on black | 7.09:1 | AAA | Lc -46.0 | 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
#F2F7EF
oklch(97% 0.012 133.4)
-
Step 100
100
#E4EEDC
oklch(93.7% 0.026 130.9)
-
Step 200
200
#CDE0BF
oklch(88.4% 0.049 131.9)
-
Step 300
300
#ACCD91
oklch(80.9% 0.089 131.6)
-
Step 400
400
#7FB24F
oklch(70.6% 0.141 131.8)
-
Step 500
500 (this color)
#66A705
oklch(65.9% 0.181 131.9)
-
Step 600
600
#508500
oklch(55.8% 0.154 131.8)
-
Step 700
700
#426F00
oklch(49% 0.136 131.8)
-
Step 800
800
#355B00
oklch(42.6% 0.118 131.9)
-
Step 900
900
#2C4C00
oklch(37.7% 0.104 131.6)
-
Step 950
950
#182D00
oklch(26.9% 0.074 131.6)
#66A705 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) | #AF9900 | 0.102 |
| Deuteranopia (no green cones) | #A69423 | 0.100 |
| Tritanopia (no blue cones) | #67A08D | 0.136 |
| Achromatopsia (no color) | #969696 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A705
#66A705
oklch(65.9% 0.181 131.9)
- #B66BE1
#B66BE1
oklch(65.8% 0.182 311.7)
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 #66A705, closest first.
No curated palette has a color within ΔE 0.04 of #66A705.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leaf Green #5CA904 ΔE 0.011
- Grass #5CAC2D ΔE 0.018
- Leaf #71AA34 ΔE 0.027
- Mid Green #50A747 ΔE 0.038
- Medium Green #39AD48 ΔE 0.042
- Avocado Green #87A922 ΔE 0.043
- Leafy Green #51B73B ΔE 0.044
- Fern #63A950 ΔE 0.045
Use #66A705 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.