#3F9D41
Closest named color: Grass Green (#3F9B0B). oklch(61.9% 0.157 143.7), rgb(63, 157, 65).
Aa
Black text reads best on this color (6.11:1).
About this color
#3F9D41 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.157 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.034 away. Black text reads best on it, at 6.11:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #3F9D41 |
| RGB | rgb(63, 157, 65) |
| HSL | hsl(121, 43%, 43%) |
| OKLCH | oklch(61.9% 0.157 143.7) |
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 #3F9D41 | 3.43:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #3F9D41 | 6.11:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #3F9D41 text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #3F9D41 text on black | 6.11:1 | AA | Lc -40.1 | 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
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE1
oklch(93.6% 0.022 145.4)
-
Step 200
200
#C9E1C8
oklch(88.5% 0.042 144.1)
-
Step 300
300
#A3CEA1
oklch(80.9% 0.077 143.7)
-
Step 400
400
#6FB46D
oklch(70.6% 0.123 143.5)
-
Step 500
500 (this color)
#3F9D41
oklch(61.9% 0.157 143.7)
-
Step 600
600
#198B22
oklch(55.6% 0.171 143.7)
-
Step 700
700
#037614
oklch(49.1% 0.159 143.8)
-
Step 800
800
#0D6014
oklch(42.7% 0.132 143.7)
-
Step 900
900
#174F19
oklch(37.8% 0.103 143.7)
-
Step 950
950
#0F2E10
oklch(26.9% 0.064 144.1)
#3F9D41 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) | #A08F38 | 0.116 |
| Deuteranopia (no green cones) | #948748 | 0.115 |
| Tritanopia (no blue cones) | #2E9989 | 0.099 |
| Achromatopsia (no color) | #8A8A8A | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9D41
#3F9D41
oklch(61.9% 0.157 143.7)
- #B260BB
#B260BB
oklch(61.8% 0.158 323.5)
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 #3F9D41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.034
- Mid Green #50A747 ΔE 0.034
- Grassy Green #419C03 ΔE 0.036
- Muted Green #5FA052 ΔE 0.038
- Flat Green #699D4C ΔE 0.044
- Kelley Green #009337 ΔE 0.044
- Irish Green #019529 ΔE 0.044
- Medium Green #39AD48 ΔE 0.045
Use #3F9D41 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.