#3F9B59
Closest named color: Light Forest Green (#4F9153). oklch(61.7% 0.132 150.1), rgb(63, 155, 89).
Aa
Black text reads best on this color (6.04:1).
About this color
#3F9B59 is a medium-dark, moderately saturated green. In OKLCH its lightness is 62%, its chroma 0.132 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.029 away. Black text reads best on it, at 6.04:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #3F9B59 |
| RGB | rgb(63, 155, 89) |
| HSL | hsl(137, 42%, 43%) |
| OKLCH | oklch(61.7% 0.132 150.1) |
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 #3F9B59 | 3.47:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #3F9B59 | 6.04:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #3F9B59 text on white | 3.47:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #3F9B59 text on black | 6.04:1 | AA | Lc -39.7 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE3
oklch(93.7% 0.019 147.8)
-
Step 200
200
#C9E0CD
oklch(88.4% 0.036 150.5)
-
Step 300
300
#A4CDAB
oklch(80.9% 0.064 149.8)
-
Step 400
400
#6FB37E
oklch(70.7% 0.104 150.1)
-
Step 500
500 (this color)
#3F9B59
oklch(61.7% 0.132 150.1)
-
Step 600
600
#198A43
oklch(55.7% 0.144 150.2)
-
Step 700
700
#047534
oklch(49.2% 0.134 150)
-
Step 800
800
#0E5F2C
oklch(42.7% 0.11 150.1)
-
Step 900
900
#174E28
oklch(37.7% 0.086 150.2)
-
Step 950
950
#102E18
oklch(27.1% 0.054 150.1)
#3F9B59 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) | #9C8F54 | 0.110 |
| Deuteranopia (no green cones) | #90865D | 0.108 |
| Tritanopia (no blue cones) | #26988B | 0.074 |
| Achromatopsia (no color) | #8A8A8A | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9B59
#3F9B59
oklch(61.7% 0.132 150.1)
- #B166AB
#B166AB
oklch(61.8% 0.132 330)
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 #3F9B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.029
- Muted Green #5FA052 ΔE 0.034
- Ocean Green #3D9973 ΔE 0.038
- Jade #1FA774 ΔE 0.040
- Flat Green #699D4C ΔE 0.041
- Fern Green #548D44 ΔE 0.041
- Viridian #1E9167 ΔE 0.045
- Mid Green #50A747 ΔE 0.048
Use #3F9B59 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.