#309E33
Closest named color: Grass Green (#3F9B0B). oklch(61.5% 0.176 143.4), rgb(48, 158, 51).
Aa
Black text reads best on this color (6.06:1).
About this color
#309E33 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.176 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.020 away. Black text reads best on it, at 6.06:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.176) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 6.06:1 |
| White text | 3.46:1 |
Values
| HEX | #309E33 |
| RGB | rgb(48, 158, 51) |
| HSL | hsl(122, 53%, 40%) |
| OKLCH | oklch(61.5% 0.176 143.4) |
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 #309E33 | 3.46:1 | AA large text | Lc -67.2 | Content text, not long reading |
| Black text on #309E33 | 6.06:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #309E33 text on white | 3.46:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #309E33 text on black | 6.06:1 | AA | Lc -40.0 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C7E2C5
oklch(88.5% 0.049 143.3)
-
Step 300
300
#A0CF9D
oklch(80.8% 0.085 143.2)
-
Step 400
400
#68B666
oklch(70.6% 0.137 143.4)
-
Step 500
500 (this color)
#309E33
oklch(61.5% 0.176 143.4)
-
Step 600
600
#008C13
oklch(55.5% 0.183 143.4)
-
Step 700
700
#00760F
oklch(49.1% 0.162 143.5)
-
Step 800
800
#00610A
oklch(42.7% 0.141 143.4)
-
Step 900
900
#0D5010
oklch(37.7% 0.115 143.4)
-
Step 950
950
#0B2F0C
oklch(27% 0.072 143.7)
#309E33 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) | #A18F25 | 0.127 |
| Deuteranopia (no green cones) | #94863D | 0.127 |
| Tritanopia (no blue cones) | #0F9988 | 0.112 |
| Achromatopsia (no color) | #8A8A8A | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309E33
#309E33
oklch(61.5% 0.176 143.4)
- #B659C0
#B659C0
oklch(61.5% 0.176 323.6)
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 #309E33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.020
- Grassy Green #419C03 ΔE 0.022
- Irish Green #019529 ΔE 0.034
- Kelly Green #02AB2E ΔE 0.040
- Kelley Green #009337 ΔE 0.040
- Mid Green #50A747 ΔE 0.042
- True Green #089404 ΔE 0.042
- Medium Green #39AD48 ΔE 0.046
Use #309E33 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.