#4FAC39
Closest named color: Grass (#5CAC2D). oklch(66.4% 0.176 140.1), rgb(79, 172, 57).
Aa
Black text reads best on this color (7.29:1).
About this color
#4FAC39 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.176 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.012 away. Black text reads best on it, at 7.29:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.176) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.29:1 |
| White text | 2.87:1 |
Values
| HEX | #4FAC39 |
| RGB | rgb(79, 172, 57) |
| HSL | hsl(109, 50%, 45%) |
| OKLCH | oklch(66.4% 0.176 140.1) |
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 #4FAC39 | 2.87:1 | Fails | Lc -60.0 | Content text, not long reading |
| Black text on #4FAC39 | 7.29:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #4FAC39 text on white | 2.87:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #4FAC39 text on black | 7.29:1 | AAA | Lc -47.1 | Large or bold text, headings |
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
#F1F7F0
oklch(97% 0.011 141.3)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C9E1C4
oklch(88.4% 0.047 140.3)
-
Step 300
300
#A3CF9A
oklch(80.9% 0.087 140.3)
-
Step 400
400
#6FB560
oklch(70.6% 0.138 140.1)
-
Step 500
500 (this color)
#4FAC39
oklch(66.4% 0.176 140.1)
-
Step 600
600
#278A00
oklch(55.5% 0.179 140.1)
-
Step 700
700
#207500
oklch(49.3% 0.159 140.1)
-
Step 800
800
#186000
oklch(42.8% 0.138 140.2)
-
Step 900
900
#184F08
oklch(37.7% 0.114 140)
-
Step 950
950
#102F08
oklch(27.2% 0.074 139.8)
#4FAC39 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) | #B19D2A | 0.120 |
| Deuteranopia (no green cones) | #A59543 | 0.120 |
| Tritanopia (no blue cones) | #45A794 | 0.117 |
| Achromatopsia (no color) | #989898 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FAC39
#4FAC39
oklch(66.4% 0.176 140.1)
- #C16AD5
#C16AD5
oklch(66.3% 0.176 319.9)
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 #4FAC39, closest first.
No curated palette has a color within ΔE 0.04 of #4FAC39.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.012
- Medium Green #39AD48 ΔE 0.016
- Mid Green #50A747 ΔE 0.022
- Leaf Green #5CA904 ΔE 0.023
- Dark Pastel Green #56AE57 ΔE 0.031
- Leaf #71AA34 ΔE 0.031
- Leafy Green #51B73B ΔE 0.032
- Shamrock #01B44C ΔE 0.032
Use #4FAC39 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.