#3FA400
Closest named color: Grassy Green (#419C03). oklch(63.4% 0.198 138.5), rgb(63, 164, 0).
Aa
Black text reads best on this color (6.52:1).
About this color
#3FA400 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.198 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.023 away. Black text reads best on it, at 6.52:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.198) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.52:1 |
| White text | 3.22:1 |
Values
| HEX | #3FA400 |
| RGB | rgb(63, 164, 0) |
| HSL | hsl(97, 100%, 32%) |
| OKLCH | oklch(63.4% 0.198 138.5) |
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 #3FA400 | 3.22:1 | AA large text | Lc -64.4 | Content text, not long reading |
| Black text on #3FA400 | 6.52:1 | AA | Lc 45.1 | Large or bold text, headings |
| #3FA400 text on white | 3.22:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #3FA400 text on black | 6.52:1 | AA | Lc -42.8 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E1EFDD
oklch(93.7% 0.028 138.7)
-
Step 200
200
#C8E2C0
oklch(88.5% 0.054 138.3)
-
Step 300
300
#A1D093
oklch(80.9% 0.097 138.6)
-
Step 400
400
#6CB753
oklch(70.8% 0.155 138.5)
-
Step 500
500 (this color)
#3FA400
oklch(63.4% 0.198 138.5)
-
Step 600
600
#338900
oklch(55.5% 0.173 138.5)
-
Step 700
700
#2A7300
oklch(49% 0.153 138.4)
-
Step 800
800
#215F00
oklch(42.8% 0.134 138.5)
-
Step 900
900
#1A4F00
oklch(37.7% 0.118 138.5)
-
Step 950
950
#0E2F01
oklch(27% 0.082 138.2)
#3FA400 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) | #A99400 | 0.130 |
| Deuteranopia (no green cones) | #9D8C21 | 0.128 |
| Tritanopia (no blue cones) | #349E8B | 0.137 |
| Achromatopsia (no color) | #8F8F8F | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA400
#3FA400
oklch(63.4% 0.198 138.5)
- #BB5AD5
#BB5AD5
oklch(63.4% 0.198 318.7)
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 #3FA400, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.023
- Kelly Green #02AB2E ΔE 0.026
- Grass Green #3F9B0B ΔE 0.027
- Leaf Green #5CA904 ΔE 0.030
- Grass #5CAC2D ΔE 0.041
- Medium Green #39AD48 ΔE 0.042
- Mid Green #50A747 ΔE 0.045
- Shamrock #01B44C ΔE 0.052
Use #3FA400 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.