#66A334
Closest named color: Mid Green (#50A747). oklch(65.1% 0.156 133.8), rgb(102, 163, 52).
Aa
Black text reads best on this color (6.85:1).
About this color
#66A334 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.156 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.022 away. Black text reads best on it, at 6.85:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.85:1 |
| White text | 3.06:1 |
Values
| HEX | #66A334 |
| RGB | rgb(102, 163, 52) |
| HSL | hsl(93, 52%, 42%) |
| OKLCH | oklch(65.1% 0.156 133.8) |
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 #66A334 | 3.06:1 | AA large text | Lc -62.7 | Content text, not long reading |
| Black text on #66A334 | 6.85:1 | AA | Lc 46.7 | Large or bold text, headings |
| #66A334 text on white | 3.06:1 | AA large text | Lc 57.3 | Large or bold text, headings |
| #66A334 text on black | 6.85:1 | AA | Lc -44.4 | 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
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E4EDDF
oklch(93.5% 0.021 134.1)
-
Step 200
200
#CEE0C4
oklch(88.6% 0.042 134.2)
-
Step 300
300
#ADCC9A
oklch(80.9% 0.076 133.8)
-
Step 400
400
#81B160
oklch(70.7% 0.122 133.7)
-
Step 500
500 (this color)
#66A334
oklch(65.1% 0.156 133.8)
-
Step 600
600
#498600
oklch(55.7% 0.159 133.9)
-
Step 700
700
#3D7000
oklch(49% 0.14 133.6)
-
Step 800
800
#315C00
oklch(42.6% 0.122 133.6)
-
Step 900
900
#294C07
oklch(37.6% 0.102 133.8)
-
Step 950
950
#192D08
oklch(27.1% 0.065 133.4)
#66A334 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) | #A99624 | 0.091 |
| Deuteranopia (no green cones) | #A1913E | 0.093 |
| Tritanopia (no blue cones) | #669D8C | 0.114 |
| Achromatopsia (no color) | #939393 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A334
#66A334
oklch(65.1% 0.156 133.8)
- #B16FD1
#B16FD1
oklch(65% 0.156 313.8)
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 #66A334, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.022
- Leaf #71AA34 ΔE 0.025
- Fern #63A950 ΔE 0.026
- Grass #5CAC2D ΔE 0.029
- Off Green #6BA353 ΔE 0.032
- Muted Green #5FA052 ΔE 0.032
- Flat Green #699D4C ΔE 0.033
- Leaf Green #5CA904 ΔE 0.034
Use #66A334 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.