#509B09
Closest named color: Grassy Green (#419C03). oklch(61.6% 0.178 135.2), rgb(80, 155, 9).
Aa
Black text reads best on this color (6.03:1).
About this color
#509B09 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.178 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.013 away. Black text reads best on it, at 6.03:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.03:1 |
| White text | 3.48:1 |
Values
| HEX | #509B09 |
| RGB | rgb(80, 155, 9) |
| HSL | hsl(91, 89%, 32%) |
| OKLCH | oklch(61.6% 0.178 135.2) |
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 #509B09 | 3.48:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #509B09 | 6.03:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #509B09 text on white | 3.48:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #509B09 text on black | 6.03:1 | AA | Lc -39.7 | 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
#E3EEDD
oklch(93.6% 0.025 134.3)
-
Step 200
200
#CCE1C1
oklch(88.6% 0.049 134.8)
-
Step 300
300
#A8CE95
oklch(80.9% 0.088 135.4)
-
Step 400
400
#79B457
oklch(70.8% 0.14 135.3)
-
Step 500
500 (this color)
#509B09
oklch(61.6% 0.178 135.2)
-
Step 600
600
#448700
oklch(55.7% 0.163 135.2)
-
Step 700
700
#387100
oklch(49% 0.143 135.1)
-
Step 800
800
#2D5D00
oklch(42.7% 0.125 135.1)
-
Step 900
900
#244E00
oklch(37.8% 0.111 135.4)
-
Step 950
950
#152E04
oklch(27.1% 0.073 135.3)
#509B09 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) | #A18D00 | 0.108 |
| Deuteranopia (no green cones) | #978722 | 0.107 |
| Tritanopia (no blue cones) | #4D9583 | 0.128 |
| Achromatopsia (no color) | #898989 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509B09
#509B09
oklch(61.6% 0.178 135.2)
- #AD5DCD
#AD5DCD
oklch(61.7% 0.179 315.4)
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 #509B09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.013
- Grass Green #3F9B0B ΔE 0.014
- Leaf Green #5CA904 ΔE 0.044
- Mid Green #50A747 ΔE 0.046
- Irish Green #019529 ΔE 0.046
- Dark Yellow Green #728F02 ΔE 0.048
- True Green #089404 ΔE 0.048
- Sap Green #5C8B15 ΔE 0.048
Use #509B09 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.