#3F8F31
Closest named color: Kelley Green (#009337). oklch(57.9% 0.152 140.8), rgb(63, 143, 49).
Aa
Black text reads best on this color (5.18:1).
About this color
#3F8F31 is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.152 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.026 away. Black text reads best on it, at 5.18:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #3F8F31 |
| RGB | rgb(63, 143, 49) |
| HSL | hsl(111, 49%, 38%) |
| OKLCH | oklch(57.9% 0.152 140.8) |
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 #3F8F31 | 4.05:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #3F8F31 | 5.18:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #3F8F31 text on white | 4.05:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #3F8F31 text on black | 5.18:1 | AA | Lc -34.2 | 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 600.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EDE1
oklch(93.5% 0.019 140.5)
-
Step 200
200
#CCE0C8
oklch(88.5% 0.039 140.5)
-
Step 300
300
#A9CCA3
oklch(80.9% 0.068 141)
-
Step 400
400
#7AB270
oklch(70.8% 0.11 140.7)
-
Step 500
500
#559E49
oklch(63.2% 0.141 140.9)
-
Step 600
600 (this color)
#3F8F31
oklch(57.9% 0.152 140.8)
-
Step 700
700
#29731B
oklch(49.1% 0.142 140.8)
-
Step 800
800
#245E19
oklch(42.8% 0.118 140.7)
-
Step 900
900
#234D1C
oklch(37.7% 0.091 140.9)
-
Step 950
950
#152D11
oklch(26.9% 0.058 140.9)
#3F8F31 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) | #938225 | 0.106 |
| Deuteranopia (no green cones) | #887C39 | 0.104 |
| Tritanopia (no blue cones) | #358B7B | 0.099 |
| Achromatopsia (no color) | #7E7E7E | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8F31
#3F8F31
oklch(57.9% 0.152 140.8)
- #A157B0
#A157B0
oklch(57.8% 0.152 320.7)
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 #3F8F31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.026
- Forest Green #228B22 ΔE 0.028
- Sap Green #5C8B15 ΔE 0.028
- Fern Green #548D44 ΔE 0.032
- Irish Green #019529 ΔE 0.032
- Emerald Green #028F1E ΔE 0.034
- Mossy Green #638B27 ΔE 0.035
- Moss Green #658B38 ΔE 0.042
Use #3F8F31 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.