#3FB942
Closest named color: Leafy Green (#51B73B). oklch(69.3% 0.192 143.5), rgb(63, 185, 66).
Aa
Black text reads best on this color (8.22:1).
About this color
#3FB942 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.192 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.011 away. Black text reads best on it, at 8.22:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.22:1 |
| White text | 2.55:1 |
Values
| HEX | #3FB942 |
| RGB | rgb(63, 185, 66) |
| HSL | hsl(121, 49%, 49%) |
| OKLCH | oklch(69.3% 0.192 143.5) |
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 #3FB942 | 2.55:1 | Fails | Lc -54.6 | Large or bold text, headings |
| Black text on #3FB942 | 8.22:1 | AAA | Lc 54.5 | Large or bold text, headings |
| #3FB942 text on white | 2.55:1 | Fails | Lc 49.5 | Large or bold text, headings |
| #3FB942 text on black | 8.22:1 | AAA | Lc -52.4 | 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
#EFF8EF
oklch(97% 0.015 145.5)
-
Step 100
100
#DDF0DB
oklch(93.5% 0.034 142.6)
-
Step 200
200
#C0E5BD
oklch(88.5% 0.067 143)
-
Step 300
300
#90D58E
oklch(80.9% 0.12 143.7)
-
Step 400
400 (this color)
#3FB942
oklch(69.3% 0.192 143.5)
-
Step 500
500
#00A71A
oklch(63.2% 0.208 143.5)
-
Step 600
600
#008C14
oklch(55.5% 0.183 143.5)
-
Step 700
700
#00760F
oklch(49.1% 0.162 143.5)
-
Step 800
800
#00610B
oklch(42.7% 0.141 143.5)
-
Step 900
900
#005107
oklch(37.7% 0.124 143.4)
-
Step 950
950
#003103
oklch(27.2% 0.089 143.6)
#3FB942 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) | #BDA834 | 0.140 |
| Deuteranopia (no green cones) | #AE9E4C | 0.139 |
| Tritanopia (no blue cones) | #21B4A0 | 0.121 |
| Achromatopsia (no color) | #A2A2A2 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FB942
#3FB942
oklch(69.3% 0.192 143.5)
- #D46CDF
#D46CDF
oklch(69.4% 0.192 323.7)
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 #3FB942, closest first.
No curated palette has a color within ΔE 0.04 of #3FB942.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.011
- Shamrock Green #02C14D ΔE 0.024
- Shamrock #01B44C ΔE 0.028
- Frog Green #58BC08 ΔE 0.033
- Cool Green #33B864 ΔE 0.035
- Grass #5CAC2D ΔE 0.037
- Medium Green #39AD48 ΔE 0.038
- Algae Green #21C36F ΔE 0.046
Use #3FB942 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.