#3FA431
Closest named color: Mid Green (#50A747). oklch(63.6% 0.179 141.3), rgb(63, 164, 49).
Aa
Black text reads best on this color (6.56:1).
About this color
#3FA431 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.179 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.027 away. Black text reads best on it, at 6.56:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #3FA431 |
| RGB | rgb(63, 164, 49) |
| HSL | hsl(113, 54%, 42%) |
| OKLCH | oklch(63.6% 0.179 141.3) |
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 #3FA431 | 3.19:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #3FA431 | 6.56:1 | AA | Lc 45.3 | Large or bold text, headings |
| #3FA431 text on white | 3.19:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #3FA431 text on black | 6.56:1 | AA | Lc -43.0 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C8E2C4
oklch(88.6% 0.049 141.4)
-
Step 300
300
#A1CF9A
oklch(80.8% 0.088 141.3)
-
Step 400
400
#6CB661
oklch(70.7% 0.14 141.2)
-
Step 500
500 (this color)
#3FA431
oklch(63.6% 0.179 141.3)
-
Step 600
600
#1A8B00
oklch(55.5% 0.184 141.3)
-
Step 700
700
#147500
oklch(49% 0.162 141.3)
-
Step 800
800
#0E6000
oklch(42.6% 0.141 141.4)
-
Step 900
900
#135009
oklch(37.8% 0.117 141.3)
-
Step 950
950
#0E2F09
oklch(27.1% 0.074 141.2)
#3FA431 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) | #A89520 | 0.124 |
| Deuteranopia (no green cones) | #9C8D3C | 0.124 |
| Tritanopia (no blue cones) | #2F9F8D | 0.117 |
| Achromatopsia (no color) | #909090 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA431
#3FA431
oklch(63.6% 0.179 141.3)
- #BB60CB
#BB60CB
oklch(63.7% 0.179 321.5)
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 #3FA431, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.027
- Grassy Green #419C03 ΔE 0.027
- Medium Green #39AD48 ΔE 0.028
- Kelly Green #02AB2E ΔE 0.028
- Grass Green #3F9B0B ΔE 0.029
- Leaf Green #5CA904 ΔE 0.034
- Grass #5CAC2D ΔE 0.036
- Shamrock #01B44C ΔE 0.045
Use #3FA431 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.