#509F00
Closest named color: Grassy Green (#419C03). oklch(62.7% 0.184 135.4), rgb(80, 159, 0).
Aa
Black text reads best on this color (6.30:1).
About this color
#509F00 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.184 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 0.016 away. Black text reads best on it, at 6.30:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #509F00 |
| RGB | rgb(80, 159, 0) |
| HSL | hsl(90, 100%, 31%) |
| OKLCH | oklch(62.7% 0.184 135.4) |
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 #509F00 | 3.33:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #509F00 | 6.30:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #509F00 text on white | 3.33:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #509F00 text on black | 6.30:1 | AA | Lc -41.3 | 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
#F2F7EF
oklch(97% 0.012 133.4)
-
Step 100
100
#E2EEDD
oklch(93.5% 0.026 136.3)
-
Step 200
200
#CBE1C0
oklch(88.5% 0.05 135.1)
-
Step 300
300
#A7CE94
oklch(80.8% 0.089 135.6)
-
Step 400
400
#77B454
oklch(70.7% 0.144 135.4)
-
Step 500
500 (this color)
#509F00
oklch(62.7% 0.184 135.4)
-
Step 600
600
#438700
oklch(55.6% 0.164 135.4)
-
Step 700
700
#377100
oklch(49% 0.144 135.4)
-
Step 800
800
#2C5D00
oklch(42.7% 0.126 135.4)
-
Step 900
900
#244E00
oklch(37.8% 0.111 135.4)
-
Step 950
950
#142E02
oklch(27% 0.076 135.3)
#509F00 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) | #A59100 | 0.113 |
| Deuteranopia (no green cones) | #9B8A1F | 0.112 |
| Tritanopia (no blue cones) | #4D9986 | 0.132 |
| Achromatopsia (no color) | #8D8D8D | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509F00
#509F00
oklch(62.7% 0.184 135.4)
- #B15ED2
#B15ED2
oklch(62.6% 0.184 315.4)
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 #509F00, 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 0.020
- Leaf Green #5CA904 ΔE 0.032
- Kelly Green #02AB2E ΔE 0.041
- Mid Green #50A747 ΔE 0.042
- Grass #5CAC2D ΔE 0.042
- Medium Green #39AD48 ΔE 0.047
- Irish Green #019529 ΔE 0.054
Use #509F00 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.