#309A01
Closest named color: Grass Green (#3F9B0B). oklch(60.2% 0.192 139.8), rgb(48, 154, 1).
Aa
Black text reads best on this color (5.74:1).
About this color
#309A01 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.192 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 0.012 away. Black text reads best on it, at 5.74:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.74:1 |
| White text | 3.65:1 |
Values
| HEX | #309A01 |
| RGB | rgb(48, 154, 1) |
| HSL | hsl(102, 99%, 30%) |
| OKLCH | oklch(60.2% 0.192 139.8) |
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 #309A01 | 3.65:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #309A01 | 5.74:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #309A01 text on white | 3.65:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #309A01 text on black | 5.74:1 | AA | Lc -38.1 | 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
#E1EFDD
oklch(93.7% 0.028 138.7)
-
Step 200
200
#C8E2C1
oklch(88.5% 0.052 139.1)
-
Step 300
300
#A1D096
oklch(80.9% 0.094 139.7)
-
Step 400
400
#6AB758
oklch(70.8% 0.151 139.9)
-
Step 500
500 (this color)
#309A01
oklch(60.2% 0.192 139.8)
-
Step 600
600
#2A8A00
oklch(55.5% 0.178 139.8)
-
Step 700
700
#227400
oklch(49% 0.157 139.8)
-
Step 800
800
#1A5F00
oklch(42.6% 0.136 139.8)
-
Step 900
900
#145000
oklch(37.8% 0.121 139.9)
-
Step 950
950
#0D2F04
oklch(27% 0.079 139.7)
#309A01 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 | 0.131 |
| Deuteranopia (no green cones) | #92831F | 0.127 |
| Tritanopia (no blue cones) | #1D9582 | 0.130 |
| Achromatopsia (no color) | #868686 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309A01
#309A01
oklch(60.2% 0.192 139.8)
- #B151C7
#B151C7
oklch(60.2% 0.193 319.8)
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 #309A01, 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 0.025
- Irish Green #019529 ΔE 0.028
- Kelley Green #009337 ΔE 0.041
- Emerald Green #028F1E ΔE 0.041
- Kelly Green #02AB2E ΔE 0.047
- Forest Green #228B22 ΔE 0.051
Use #309A01 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.