#3F9D19
Closest named color: Grassy Green (#419C03). oklch(61.5% 0.183 139), rgb(63, 157, 25).
Aa
Black text reads best on this color (6.04:1).
About this color
#3F9D19 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.183 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.006 away. Black text reads best on it, at 6.04:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.183) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #3F9D19 |
| RGB | rgb(63, 157, 25) |
| HSL | hsl(103, 73%, 36%) |
| OKLCH | oklch(61.5% 0.183 139) |
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 #3F9D19 | 3.47:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #3F9D19 | 6.04:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #3F9D19 text on white | 3.47:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #3F9D19 text on black | 6.04:1 | AA | Lc -39.8 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EEDE
oklch(93.5% 0.025 139.8)
-
Step 200
200
#C9E2C2
oklch(88.6% 0.051 138.9)
-
Step 300
300
#A3CF97
oklch(80.9% 0.09 139)
-
Step 400
400
#6FB65B
oklch(70.8% 0.144 139.1)
-
Step 500
500 (this color)
#3F9D19
oklch(61.5% 0.183 139)
-
Step 600
600
#308A00
oklch(55.7% 0.176 139)
-
Step 700
700
#277400
oklch(49.2% 0.155 139)
-
Step 800
800
#1E5F00
oklch(42.7% 0.135 139.1)
-
Step 900
900
#184F00
oklch(37.6% 0.119 139)
-
Step 950
950
#102F06
oklch(27.1% 0.076 139.1)
#3F9D19 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) | #A28E00 | 0.121 |
| Deuteranopia (no green cones) | #96872A | 0.120 |
| Tritanopia (no blue cones) | #349785 | 0.126 |
| Achromatopsia (no color) | #8A8A8A | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9D19
#3F9D19
oklch(61.5% 0.183 139)
- #B259C9
#B259C9
oklch(61.5% 0.183 319)
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 #3F9D19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.006
- Grass Green #3F9B0B ΔE 0.007
- Irish Green #019529 ΔE 0.039
- Kelly Green #02AB2E ΔE 0.040
- True Green #089404 ΔE 0.040
- Mid Green #50A747 ΔE 0.046
- Leaf Green #5CA904 ΔE 0.046
- Kelley Green #009337 ΔE 0.048
Use #3F9D19 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.