#509D28
Closest named color: Grassy Green (#419C03). oklch(62.3% 0.168 137.2), rgb(80, 157, 40).
Aa
Black text reads best on this color (6.19:1).
About this color
#509D28 is a medium-light, vivid green. In OKLCH its lightness is 62%, its chroma 0.168 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.022 away. Black text reads best on it, at 6.19:1.
| Hue family | Greens |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.168) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.19:1 |
| White text | 3.39:1 |
Values
| HEX | #509D28 |
| RGB | rgb(80, 157, 40) |
| HSL | hsl(99, 59%, 39%) |
| OKLCH | oklch(62.3% 0.168 137.2) |
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 #509D28 | 3.39:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #509D28 | 6.19:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #509D28 text on white | 3.39:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #509D28 text on black | 6.19:1 | AA | Lc -40.6 | 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
#E3EEDE
oklch(93.6% 0.024 135.7)
-
Step 200
200
#CBE1C3
oklch(88.5% 0.047 137.3)
-
Step 300
300
#A8CE99
oklch(81% 0.083 137)
-
Step 400
400
#78B35F
oklch(70.6% 0.131 137)
-
Step 500
500 (this color)
#509D28
oklch(62.3% 0.168 137.2)
-
Step 600
600
#3B8800
oklch(55.6% 0.169 137.1)
-
Step 700
700
#307300
oklch(49.2% 0.15 137.3)
-
Step 800
800
#265E00
oklch(42.7% 0.13 137.2)
-
Step 900
900
#214E06
oklch(37.7% 0.109 137.2)
-
Step 950
950
#142E08
oklch(27.1% 0.07 137.4)
#509D28 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) | #A28F11 | 0.106 |
| Deuteranopia (no green cones) | #988934 | 0.106 |
| Tritanopia (no blue cones) | #4B9786 | 0.118 |
| Achromatopsia (no color) | #8B8B8B | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509D28
#509D28
oklch(62.3% 0.168 137.2)
- #AF61C9
#AF61C9
oklch(62.3% 0.169 317.1)
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 #509D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.022
- Grass Green #3F9B0B ΔE 0.023
- Mid Green #50A747 ΔE 0.034
- Leaf Green #5CA904 ΔE 0.042
- Muted Green #5FA052 ΔE 0.044
- Medium Green #39AD48 ΔE 0.045
- Flat Green #699D4C ΔE 0.046
- Grass #5CAC2D ΔE 0.046
Use #509D28 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.