#3F9643
Closest named color: Fern Green (#548D44). oklch(60% 0.146 144.3), rgb(63, 150, 67).
Aa
Black text reads best on this color (5.65:1).
About this color
#3F9643 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.146 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.031 away. Black text reads best on it, at 5.65:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.65:1 |
| White text | 3.71:1 |
Values
| HEX | #3F9643 |
| RGB | rgb(63, 150, 67) |
| HSL | hsl(123, 41%, 42%) |
| OKLCH | oklch(60% 0.146 144.3) |
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 #3F9643 | 3.71:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #3F9643 | 5.65:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #3F9643 text on white | 3.71:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #3F9643 text on black | 5.65:1 | AA | Lc -37.3 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE0C9
oklch(88.4% 0.039 144)
-
Step 300
300
#A5CDA4
oklch(80.8% 0.071 144.3)
-
Step 400
400
#72B372
oklch(70.6% 0.114 144.2)
-
Step 500
500 (this color)
#3F9643
oklch(60% 0.146 144.3)
-
Step 600
600
#248A2E
oklch(55.7% 0.159 144.4)
-
Step 700
700
#147520
oklch(49.2% 0.148 144.3)
-
Step 800
800
#165F1D
oklch(42.7% 0.122 144.4)
-
Step 900
900
#1B4E1D
oklch(37.7% 0.096 144)
-
Step 950
950
#112E12
oklch(27% 0.061 144.3)
#3F9643 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) | #99893B | 0.110 |
| Deuteranopia (no green cones) | #8D8249 | 0.107 |
| Tritanopia (no blue cones) | #2F9283 | 0.090 |
| Achromatopsia (no color) | #858585 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9643
#3F9643
oklch(60% 0.146 144.3)
- #AA5EB1
#AA5EB1
oklch(60% 0.147 324.1)
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 #3F9643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.031
- Light Forest Green #4F9153 ΔE 0.032
- Kelley Green #009337 ΔE 0.033
- Irish Green #019529 ΔE 0.040
- Sap Green #5C8B15 ΔE 0.041
- Mossy Green #638B27 ΔE 0.041
- Moss Green #658B38 ΔE 0.043
- Grass Green #3F9B0B ΔE 0.044
Use #3F9643 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.