#3F9927
Closest named color: Grass Green (#3F9B0B). oklch(60.5% 0.172 139.9), rgb(63, 153, 39).
Aa
Black text reads best on this color (5.79:1).
About this color
#3F9927 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.172 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.015 away. Black text reads best on it, at 5.79:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.79:1 |
| White text | 3.62:1 |
Values
| HEX | #3F9927 |
| RGB | rgb(63, 153, 39) |
| HSL | hsl(107, 59%, 38%) |
| OKLCH | oklch(60.5% 0.172 139.9) |
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 #3F9927 | 3.62:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #3F9927 | 5.79:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #3F9927 text on white | 3.62:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #3F9927 text on black | 5.79:1 | AA | Lc -38.2 | 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 500.
-
Step 50
50
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E2EEDF
oklch(93.6% 0.024 139.4)
-
Step 200
200
#CAE1C4
oklch(88.5% 0.046 139.2)
-
Step 300
300
#A4CE9B
oklch(80.8% 0.083 140.1)
-
Step 400
400
#71B562
oklch(70.8% 0.135 140)
-
Step 500
500 (this color)
#3F9927
oklch(60.5% 0.172 139.9)
-
Step 600
600
#298A00
oklch(55.5% 0.178 139.9)
-
Step 700
700
#217400
oklch(49% 0.157 139.9)
-
Step 800
800
#196000
oklch(42.8% 0.138 140)
-
Step 900
900
#1A4F0A
oklch(37.8% 0.112 139.8)
-
Step 950
950
#112E09
oklch(26.9% 0.07 139.6)
#3F9927 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) | #9D8B11 | 0.114 |
| Deuteranopia (no green cones) | #928433 | 0.115 |
| Tritanopia (no blue cones) | #349483 | 0.116 |
| Achromatopsia (no color) | #868686 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9927
#3F9927
oklch(60.5% 0.172 139.9)
- #AD59C0
#AD59C0
oklch(60.4% 0.172 320)
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 #3F9927, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.015
- Grassy Green #419C03 ΔE 0.019
- Irish Green #019529 ΔE 0.030
- Kelley Green #009337 ΔE 0.036
- True Green #089404 ΔE 0.037
- Sap Green #5C8B15 ΔE 0.043
- Emerald Green #028F1E ΔE 0.044
- Forest Green #228B22 ΔE 0.049
Use #3F9927 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.