#339900
Closest named color: Grass Green (#3F9B0B). oklch(60% 0.191 139.4), rgb(51, 153, 0).
Aa
Black text reads best on this color (5.69:1).
About this color
#339900 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.191 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 0.012 away. Black text reads best on it, at 5.69:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #339900 |
| RGB | rgb(51, 153, 0) |
| HSL | hsl(100, 100%, 30%) |
| OKLCH | oklch(60% 0.191 139.4) |
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 #339900 | 3.68:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #339900 | 5.69:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #339900 text on white | 3.68:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #339900 text on black | 5.69:1 | AA | Lc -37.8 | 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
#E1EFDE
oklch(93.7% 0.027 140.2)
-
Step 200
200
#C8E2C2
oklch(88.5% 0.051 139.8)
-
Step 300
300
#A1D096
oklch(80.9% 0.094 139.7)
-
Step 400
400
#6CB658
oklch(70.6% 0.149 139.3)
-
Step 500
500 (this color)
#339900
oklch(60% 0.191 139.4)
-
Step 600
600
#2D8A00
oklch(55.6% 0.177 139.4)
-
Step 700
700
#257400
oklch(49.1% 0.156 139.3)
-
Step 800
800
#1C5F00
oklch(42.6% 0.136 139.5)
-
Step 900
900
#164F00
oklch(37.6% 0.119 139.4)
-
Step 950
950
#0E2F04
oklch(27% 0.079 139.3)
#339900 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) | #9E8A00 | 0.129 |
| Deuteranopia (no green cones) | #92821E | 0.126 |
| Tritanopia (no blue cones) | #239381 | 0.130 |
| Achromatopsia (no color) | #858585 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #339900
#339900
oklch(60% 0.191 139.4)
- #AF51C6
#AF51C6
oklch(59.9% 0.191 319.3)
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 #339900, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.012
- Grassy Green #419C03 ΔE 0.014
- True Green #089404 ΔE 0.024
- Irish Green #019529 ΔE 0.027
- Emerald Green #028F1E ΔE 0.040
- Kelley Green #009337 ΔE 0.040
- Forest Green #228B22 ΔE 0.049
- Kelly Green #02AB2E ΔE 0.050
Use #339900 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.