#3F9840
Closest named color: Kelley Green (#009337). oklch(60.5% 0.151 143.6), rgb(63, 152, 64).
Aa
Black text reads best on this color (5.77:1).
About this color
#3F9840 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.151 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.034 away. Black text reads best on it, at 5.77:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.77:1 |
| White text | 3.63:1 |
Values
| HEX | #3F9840 |
| RGB | rgb(63, 152, 64) |
| HSL | hsl(121, 41%, 42%) |
| OKLCH | oklch(60.5% 0.151 143.6) |
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 #3F9840 | 3.63:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #3F9840 | 5.77:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #3F9840 text on white | 3.63:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #3F9840 text on black | 5.77:1 | AA | Lc -38.0 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE1C8
oklch(88.6% 0.042 143)
-
Step 300
300
#A4CEA2
oklch(81% 0.075 143.7)
-
Step 400
400
#71B46F
oklch(70.8% 0.12 143.6)
-
Step 500
500 (this color)
#3F9840
oklch(60.5% 0.151 143.6)
-
Step 600
600
#228A27
oklch(55.5% 0.164 143.5)
-
Step 700
700
#117519
oklch(49.1% 0.153 143.6)
-
Step 800
800
#145F18
oklch(42.6% 0.126 143.6)
-
Step 900
900
#1A4E1B
oklch(37.6% 0.098 143.6)
-
Step 950
950
#112E11
oklch(27% 0.062 143.6)
#3F9840 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) | #9B8B37 | 0.111 |
| Deuteranopia (no green cones) | #908347 | 0.112 |
| Tritanopia (no blue cones) | #309485 | 0.096 |
| Achromatopsia (no color) | #868686 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9840
#3F9840
oklch(60.5% 0.151 143.6)
- #AC5EB5
#AC5EB5
oklch(60.4% 0.152 323.3)
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 #3F9840, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.034
- Fern Green #548D44 ΔE 0.037
- Grass Green #3F9B0B ΔE 0.038
- Light Forest Green #4F9153 ΔE 0.038
- Irish Green #019529 ΔE 0.038
- Grassy Green #419C03 ΔE 0.041
- Sap Green #5C8B15 ΔE 0.043
- Mossy Green #638B27 ΔE 0.044
Use #3F9840 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.