#3F9804
Closest named color: Grass Green (#3F9B0B). oklch(60.1% 0.184 137.8), rgb(63, 152, 4).
Aa
Black text reads best on this color (5.70:1).
About this color
#3F9804 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.184 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.009 away. Black text reads best on it, at 5.70:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.70:1 |
| White text | 3.68:1 |
Values
| HEX | #3F9804 |
| RGB | rgb(63, 152, 4) |
| HSL | hsl(96, 95%, 31%) |
| OKLCH | oklch(60.1% 0.184 137.8) |
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 #3F9804 | 3.68:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #3F9804 | 5.70:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #3F9804 text on white | 3.68:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #3F9804 text on black | 5.70:1 | AA | Lc -37.7 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E2EEDE
oklch(93.6% 0.025 137.8)
-
Step 200
200
#CAE1C2
oklch(88.4% 0.048 137.6)
-
Step 300
300
#A4CF96
oklch(80.9% 0.09 138.1)
-
Step 400
400
#72B558
oklch(70.7% 0.144 137.6)
-
Step 500
500 (this color)
#3F9804
oklch(60.1% 0.184 137.8)
-
Step 600
600
#378900
oklch(55.7% 0.172 137.9)
-
Step 700
700
#2D7300
oklch(49.1% 0.151 137.9)
-
Step 800
800
#245E00
oklch(42.6% 0.131 137.7)
-
Step 900
900
#1D4F00
oklch(37.8% 0.116 137.7)
-
Step 950
950
#112E04
oklch(26.8% 0.076 137.7)
#3F9804 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) | #9D8A00 | 0.119 |
| Deuteranopia (no green cones) | #928320 | 0.116 |
| Tritanopia (no blue cones) | #379280 | 0.128 |
| Achromatopsia (no color) | #858585 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9804
#3F9804
oklch(60.1% 0.184 137.8)
- #AC55C6
#AC55C6
oklch(60.1% 0.183 317.9)
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 #3F9804, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.009
- Grassy Green #419C03 ΔE 0.012
- True Green #089404 ΔE 0.030
- Irish Green #019529 ΔE 0.030
- Kelley Green #009337 ΔE 0.040
- Emerald Green #028F1E ΔE 0.042
- Sap Green #5C8B15 ΔE 0.046
- Forest Green #228B22 ΔE 0.048
Use #3F9804 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.