#3F9141
Closest named color: Fern Green (#548D44). oklch(58.7% 0.141 143.9), rgb(63, 145, 65).
Aa
Black text reads best on this color (5.33:1).
About this color
#3F9141 is a medium-dark, vivid green. In OKLCH its lightness is 59%, its chroma 0.141 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 0.023 away. Black text reads best on it, at 5.33:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #3F9141 |
| RGB | rgb(63, 145, 65) |
| HSL | hsl(121, 39%, 41%) |
| OKLCH | oklch(58.7% 0.141 143.9) |
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 #3F9141 | 3.93:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #3F9141 | 5.33:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #3F9141 text on white | 3.93:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #3F9141 text on black | 5.33:1 | AA | Lc -35.2 | 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 600.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE2
oklch(93.6% 0.018 142.8)
-
Step 200
200
#CCE0CB
oklch(88.6% 0.036 144)
-
Step 300
300
#A9CCA7
oklch(81% 0.063 143.6)
-
Step 400
400
#79B178
oklch(70.7% 0.101 144)
-
Step 500
500
#549D54
oklch(63% 0.129 143.9)
-
Step 600
600 (this color)
#3F9141
oklch(58.7% 0.141 143.9)
-
Step 700
700
#26732A
oklch(49.1% 0.131 144)
-
Step 800
800
#225E24
oklch(42.8% 0.109 143.9)
-
Step 900
900
#224D22
oklch(37.8% 0.085 143.7)
-
Step 950
950
#152D15
oklch(27% 0.053 143.9)
#3F9141 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) | #94853A | 0.105 |
| Deuteranopia (no green cones) | #897D47 | 0.105 |
| Tritanopia (no blue cones) | #318D7F | 0.089 |
| Achromatopsia (no color) | #808080 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9141
#3F9141
oklch(58.7% 0.141 143.9)
- #A45CAB
#A45CAB
oklch(58.7% 0.14 323.9)
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 #3F9141, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.023
- Light Forest Green #4F9153 ΔE 0.028
- Kelley Green #009337 ΔE 0.031
- Sap Green #5C8B15 ΔE 0.036
- Mossy Green #638B27 ΔE 0.037
- Moss Green #658B38 ΔE 0.038
- Sea Green #2E8B57 ΔE 0.038
- Forest Green #228B22 ΔE 0.040
Use #3F9141 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.