#3F9B15
Closest named color: Grass Green (#3F9B0B). oklch(61% 0.183 138.7), rgb(63, 155, 21).
Aa
Black text reads best on this color (5.91:1).
About this color
#3F9B15 is a medium-dark, vivid green. In OKLCH its lightness is 61%, 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 Grass Green (#3F9B0B), ΔE 0.003 away. Black text reads best on it, at 5.91:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.183) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.91:1 |
| White text | 3.55:1 |
Values
| HEX | #3F9B15 |
| RGB | rgb(63, 155, 21) |
| HSL | hsl(101, 76%, 35%) |
| OKLCH | oklch(61% 0.183 138.7) |
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 #3F9B15 | 3.55:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #3F9B15 | 5.91:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #3F9B15 text on white | 3.55:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #3F9B15 text on black | 5.91:1 | AA | Lc -39.0 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E2EEDE
oklch(93.6% 0.025 137.8)
-
Step 200
200
#C9E2C2
oklch(88.6% 0.051 138.9)
-
Step 300
300
#A4CF97
oklch(80.9% 0.089 138.5)
-
Step 400
400
#70B55B
oklch(70.6% 0.142 138.8)
-
Step 500
500 (this color)
#3F9B15
oklch(61% 0.183 138.7)
-
Step 600
600
#328900
oklch(55.5% 0.174 138.7)
-
Step 700
700
#297400
oklch(49.2% 0.154 138.7)
-
Step 800
800
#205F00
oklch(42.8% 0.134 138.7)
-
Step 900
900
#194F00
oklch(37.7% 0.118 138.8)
-
Step 950
950
#102F05
oklch(27.1% 0.077 138.7)
#3F9B15 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) | #A08C00 | 0.120 |
| Deuteranopia (no green cones) | #958528 | 0.120 |
| Tritanopia (no blue cones) | #359584 | 0.127 |
| Achromatopsia (no color) | #888888 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9B15
#3F9B15
oklch(61% 0.183 138.7)
- #B058C8
#B058C8
oklch(61.1% 0.183 318.6)
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 #3F9B15, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.003
- Grassy Green #419C03 ΔE 0.006
- Irish Green #019529 ΔE 0.034
- True Green #089404 ΔE 0.036
- Kelley Green #009337 ΔE 0.044
- Kelly Green #02AB2E ΔE 0.045
- Emerald Green #028F1E ΔE 0.049
- Mid Green #50A747 ΔE 0.050
Use #3F9B15 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.