#3FB343
Closest named color: Shamrock (#01B44C). oklch(67.8% 0.184 143.7), rgb(63, 179, 67).
Aa
Black text reads best on this color (7.74:1).
About this color
#3FB343 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.184 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.019 away. Black text reads best on it, at 7.74:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.74:1 |
| White text | 2.71:1 |
Values
| HEX | #3FB343 |
| RGB | rgb(63, 179, 67) |
| HSL | hsl(122, 48%, 47%) |
| OKLCH | oklch(67.8% 0.184 143.7) |
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 #3FB343 | 2.71:1 | Fails | Lc -57.4 | Large or bold text, headings |
| Black text on #3FB343 | 7.74:1 | AAA | Lc 51.9 | Large or bold text, headings |
| #3FB343 text on white | 2.71:1 | Fails | Lc 52.2 | Large or bold text, headings |
| #3FB343 text on black | 7.74:1 | AAA | Lc -49.7 | 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
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DDF0DC
oklch(93.6% 0.033 143.9)
-
Step 200
200
#C1E5BF
oklch(88.6% 0.064 143.6)
-
Step 300
300
#92D490
oklch(80.8% 0.116 143.7)
-
Step 400
400 (this color)
#3FB343
oklch(67.8% 0.184 143.7)
-
Step 500
500
#00A71E
oklch(63.2% 0.207 143.7)
-
Step 600
600
#008C17
oklch(55.5% 0.182 143.7)
-
Step 700
700
#007612
oklch(49.1% 0.161 143.7)
-
Step 800
800
#00610D
oklch(42.7% 0.14 143.7)
-
Step 900
900
#005109
oklch(37.7% 0.123 143.7)
-
Step 950
950
#003003
oklch(26.8% 0.088 143.6)
#3FB343 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) | #B6A336 | 0.134 |
| Deuteranopia (no green cones) | #A8994C | 0.134 |
| Tritanopia (no blue cones) | #24AE9B | 0.115 |
| Achromatopsia (no color) | #9D9D9D | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FB343
#3FB343
oklch(67.8% 0.184 143.7)
- #CD6AD7
#CD6AD7
oklch(67.9% 0.184 323.8)
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 #3FB343, closest first.
No curated palette has a color within ΔE 0.04 of #3FB343.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.019
- Leafy Green #51B73B ΔE 0.019
- Medium Green #39AD48 ΔE 0.020
- Grass #5CAC2D ΔE 0.026
- Cool Green #33B864 ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.034
- Leaf Green #5CA904 ΔE 0.036
- Mid Green #50A747 ΔE 0.037
Use #3FB343 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.