#509C19
Closest named color: Grassy Green (#419C03). oklch(62% 0.174 136), rgb(80, 156, 25).
Aa
Black text reads best on this color (6.11:1).
About this color
#509C19 is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.174 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.016 away. Black text reads best on it, at 6.11:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #509C19 |
| RGB | rgb(80, 156, 25) |
| HSL | hsl(95, 72%, 35%) |
| OKLCH | oklch(62% 0.174 136) |
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 #509C19 | 3.43:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #509C19 | 6.11:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #509C19 text on white | 3.43:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #509C19 text on black | 6.11:1 | AA | Lc -40.1 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E3EEDE
oklch(93.6% 0.024 135.7)
-
Step 200
200
#CBE1C2
oklch(88.5% 0.048 136.5)
-
Step 300
300
#A8CE97
oklch(81% 0.085 136.2)
-
Step 400
400
#78B45A
oklch(70.8% 0.137 136.1)
-
Step 500
500 (this color)
#509C19
oklch(62% 0.174 136)
-
Step 600
600
#408700
oklch(55.5% 0.165 136)
-
Step 700
700
#357200
oklch(49.1% 0.146 136)
-
Step 800
800
#2A5D00
oklch(42.6% 0.127 136)
-
Step 900
900
#224E00
oklch(37.7% 0.112 136.1)
-
Step 950
950
#152E05
oklch(27.1% 0.072 135.7)
#509C19 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) | #A28E00 | 0.107 |
| Deuteranopia (no green cones) | #98882A | 0.107 |
| Tritanopia (no blue cones) | #4D9685 | 0.126 |
| Achromatopsia (no color) | #8A8A8A | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509C19
#509C19
oklch(62% 0.174 136)
- #AE5FCB
#AE5FCB
oklch(62% 0.174 316.2)
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 #509C19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.016
- Grass Green #3F9B0B ΔE 0.017
- Mid Green #50A747 ΔE 0.041
- Leaf Green #5CA904 ΔE 0.042
- Dark Yellow Green #728F02 ΔE 0.047
- Irish Green #019529 ΔE 0.048
- Kelly Green #02AB2E ΔE 0.048
- Grass #5CAC2D ΔE 0.049
Use #509C19 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.