#3FBF39
Closest named color: Shamrock Green (#02C14D). oklch(70.8% 0.205 142.4), rgb(63, 191, 57).
Aa
Black text reads best on this color (8.72:1).
About this color
#3FBF39 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.205 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.019 away. Black text reads best on it, at 8.72:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.205) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #3FBF39 |
| RGB | rgb(63, 191, 57) |
| HSL | hsl(117, 54%, 49%) |
| OKLCH | oklch(70.8% 0.205 142.4) |
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 #3FBF39 | 2.40:1 | Fails | Lc -51.9 | Large or bold text, headings |
| Black text on #3FBF39 | 8.72:1 | AAA | Lc 57.1 | Large or bold text, headings |
| #3FBF39 text on white | 2.40:1 | Fails | Lc 46.9 | Large or bold text, headings |
| #3FBF39 text on black | 8.72:1 | AAA | Lc -55.1 | 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 400.
-
Step 50
50
#EFF9EE
oklch(97.2% 0.018 142.8)
-
Step 100
100
#DCF1DA
oklch(93.6% 0.038 142.8)
-
Step 200
200
#BFE6BB
oklch(88.6% 0.071 142.5)
-
Step 300
300
#8ED688
oklch(80.9% 0.129 142.5)
-
Step 400
400 (this color)
#3FBF39
oklch(70.8% 0.205 142.4)
-
Step 500
500
#02A700
oklch(63.1% 0.215 142.4)
-
Step 600
600
#018C00
oklch(55.5% 0.189 142.5)
-
Step 700
700
#017600
oklch(49% 0.167 142.4)
-
Step 800
800
#016100
oklch(42.7% 0.145 142.4)
-
Step 900
900
#005100
oklch(37.7% 0.128 142.5)
-
Step 950
950
#003100
oklch(27.1% 0.092 142.5)
#3FBF39 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) | #C3AD24 | 0.145 |
| Deuteranopia (no green cones) | #B4A346 | 0.145 |
| Tritanopia (no blue cones) | #21B9A4 | 0.132 |
| Achromatopsia (no color) | #A7A7A7 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FBF39
#3FBF39
oklch(70.8% 0.205 142.4)
- #DB6DEB
#DB6DEB
oklch(70.9% 0.206 322.4)
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 #3FBF39, closest first.
No curated palette has a color within ΔE 0.04 of #3FBF39.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.019
- Frog Green #58BC08 ΔE 0.022
- Leafy Green #51B73B ΔE 0.025
- Lime Green #32CD32 ΔE 0.041
- Shamrock #01B44C ΔE 0.045
- Algae Green #21C36F ΔE 0.050
- Dark Lime Green #7EBD01 ΔE 0.050
- Cool Green #33B864 ΔE 0.051
Use #3FBF39 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.