#399A09
Closest named color: Grass Green (#3F9B0B). oklch(60.5% 0.187 139), rgb(57, 154, 9).
Aa
Black text reads best on this color (5.80:1).
About this color
#399A09 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.187 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 0.006 away. Black text reads best on it, at 5.80:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.187) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.80:1 |
| White text | 3.62:1 |
Values
| HEX | #399A09 |
| RGB | rgb(57, 154, 9) |
| HSL | hsl(100, 89%, 32%) |
| OKLCH | oklch(60.5% 0.187 139) |
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 #399A09 | 3.62:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #399A09 | 5.80:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #399A09 text on white | 3.62:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #399A09 text on black | 5.80:1 | AA | Lc -38.4 | 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
#A3CF96
oklch(80.8% 0.091 138.6)
-
Step 400
400
#6EB659
oklch(70.7% 0.147 139)
-
Step 500
500 (this color)
#399A09
oklch(60.5% 0.187 139)
-
Step 600
600
#308A00
oklch(55.7% 0.176 139)
-
Step 700
700
#277400
oklch(49.2% 0.155 139)
-
Step 800
800
#1F5F00
oklch(42.7% 0.134 138.9)
-
Step 900
900
#184F00
oklch(37.6% 0.119 139)
-
Step 950
950
#0F2F04
oklch(27.1% 0.078 138.8)
#399A09 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) | #9F8B00 | 0.125 |
| Deuteranopia (no green cones) | #938422 | 0.122 |
| Tritanopia (no blue cones) | #2D9482 | 0.129 |
| Achromatopsia (no color) | #868686 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399A09
#399A09
oklch(60.5% 0.187 139)
- #AF54C7
#AF54C7
oklch(60.4% 0.187 318.8)
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 #399A09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.006
- Grassy Green #419C03 ΔE 0.009
- True Green #089404 ΔE 0.030
- Irish Green #019529 ΔE 0.031
- Kelley Green #009337 ΔE 0.042
- Emerald Green #028F1E ΔE 0.044
- Kelly Green #02AB2E ΔE 0.047
- Forest Green #228B22 ΔE 0.052
Use #399A09 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.