#509F51
Closest named color: Muted Green (#5FA052). oklch(63.3% 0.137 144), rgb(80, 159, 81).
Aa
Black text reads best on this color (6.41:1).
About this color
#509F51 is a medium-light, moderately saturated green. In OKLCH its lightness is 63%, its chroma 0.137 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muted Green (#5FA052), ΔE 0.015 away. Black text reads best on it, at 6.41:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Muted Green (#5FA052) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #509F51 |
| RGB | rgb(80, 159, 81) |
| HSL | hsl(121, 33%, 47%) |
| OKLCH | oklch(63.3% 0.137 144) |
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 #509F51 | 3.27:1 | AA large text | Lc -65.2 | Content text, not long reading |
| Black text on #509F51 | 6.41:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #509F51 text on white | 3.27:1 | AA large text | Lc 59.8 | Large or bold text, headings |
| #509F51 text on black | 6.41:1 | AA | Lc -41.9 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EDE2
oklch(93.5% 0.019 145.4)
-
Step 200
200
#CBE0CA
oklch(88.5% 0.037 144)
-
Step 300
300
#A7CCA6
oklch(80.8% 0.066 144.3)
-
Step 400
400
#76B275
oklch(70.7% 0.107 144)
-
Step 500
500 (this color)
#509F51
oklch(63.3% 0.137 144)
-
Step 600
600
#2F8933
oklch(55.7% 0.15 143.9)
-
Step 700
700
#207425
oklch(49.2% 0.139 143.9)
-
Step 800
800
#1D5E21
oklch(42.6% 0.114 144.2)
-
Step 900
900
#1F4D20
oklch(37.6% 0.089 143.9)
-
Step 950
950
#132D13
oklch(26.8% 0.057 143.8)
#509F51 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) | #A2934B | 0.103 |
| Deuteranopia (no green cones) | #978B56 | 0.102 |
| Tritanopia (no blue cones) | #459B8D | 0.086 |
| Achromatopsia (no color) | #8E8E8E | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509F51
#509F51
oklch(63.3% 0.137 144)
- #B26BB9
#B26BB9
oklch(63.4% 0.137 323.8)
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 #509F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Green #5FA052 ΔE 0.015
- Flat Green #699D4C ΔE 0.024
- Mid Green #50A747 ΔE 0.029
- Off Green #6BA353 ΔE 0.031
- Fern #63A950 ΔE 0.037
- Algae #54AC68 ΔE 0.041
- Seaweed Green #35AD6B ΔE 0.042
- Light Forest Green #4F9153 ΔE 0.043
Use #509F51 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.