#509D37
Closest named color: Mid Green (#50A747). oklch(62.5% 0.157 138.9), rgb(80, 157, 55).
Aa
Black text reads best on this color (6.21:1).
About this color
#509D37 is a medium-light, vivid green. In OKLCH its lightness is 62%, its chroma 0.157 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.029 away. Black text reads best on it, at 6.21:1.
| Hue family | Greens |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.21:1 |
| White text | 3.37:1 |
Values
| HEX | #509D37 |
| RGB | rgb(80, 157, 55) |
| HSL | hsl(105, 48%, 42%) |
| OKLCH | oklch(62.5% 0.157 138.9) |
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 #509D37 | 3.37:1 | AA large text | Lc -66.4 | Content text, not long reading |
| Black text on #509D37 | 6.21:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #509D37 text on white | 3.37:1 | AA large text | Lc 61.0 | Content text, not long reading |
| #509D37 text on black | 6.21:1 | AA | Lc -40.7 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EEE0
oklch(93.7% 0.022 139)
-
Step 200
200
#CBE0C5
oklch(88.4% 0.043 138.7)
-
Step 300
300
#A8CD9D
oklch(80.9% 0.077 138.6)
-
Step 400
400
#78B366
oklch(70.7% 0.124 138.6)
-
Step 500
500 (this color)
#509D37
oklch(62.5% 0.157 138.9)
-
Step 600
600
#338909
oklch(55.6% 0.171 138.9)
-
Step 700
700
#287400
oklch(49.2% 0.155 138.8)
-
Step 800
800
#205F04
oklch(42.8% 0.132 139)
-
Step 900
900
#214E11
oklch(37.8% 0.103 138.8)
-
Step 950
950
#142E0C
oklch(27.1% 0.066 139)
#509D37 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) | #A2902B | 0.105 |
| Deuteranopia (no green cones) | #978940 | 0.105 |
| Tritanopia (no blue cones) | #4A9888 | 0.108 |
| Achromatopsia (no color) | #8C8C8C | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509D37
#509D37
oklch(62.5% 0.157 138.9)
- #AF64C3
#AF64C3
oklch(62.4% 0.158 318.9)
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 #509D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.029
- Grass Green #3F9B0B ΔE 0.032
- Grassy Green #419C03 ΔE 0.032
- Muted Green #5FA052 ΔE 0.034
- Flat Green #699D4C ΔE 0.037
- Medium Green #39AD48 ΔE 0.044
- Olive Drab #6B8E23 ΔE 0.045
- Off Green #6BA353 ΔE 0.046
Use #509D37 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.