#3F8F45
Closest named color: Fern Green (#548D44). oklch(58.2% 0.134 145), rgb(63, 143, 69).
Aa
Black text reads best on this color (5.22:1).
About this color
#3F8F45 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.134 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.019 away. Black text reads best on it, at 5.22:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.22:1 |
| White text | 4.01:1 |
Values
| HEX | #3F8F45 |
| RGB | rgb(63, 143, 69) |
| HSL | hsl(124, 39%, 40%) |
| OKLCH | oklch(58.2% 0.134 145) |
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 #3F8F45 | 4.01:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #3F8F45 | 5.22:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #3F8F45 text on white | 4.01:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #3F8F45 text on black | 5.22:1 | AA | Lc -34.5 | 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 600.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE3
oklch(93.6% 0.017 145.4)
-
Step 200
200
#CCDFCC
oklch(88.4% 0.033 145.3)
-
Step 300
300
#A9CBA9
oklch(80.8% 0.06 145)
-
Step 400
400
#7AB17B
oklch(70.8% 0.097 144.9)
-
Step 500
500
#559D59
oklch(63.2% 0.123 145.1)
-
Step 600
600 (this color)
#3F8F45
oklch(58.2% 0.134 145)
-
Step 700
700
#28722F
oklch(49% 0.125 145)
-
Step 800
800
#235D28
oklch(42.6% 0.103 145)
-
Step 900
900
#224D25
oklch(37.8% 0.082 145.1)
-
Step 950
950
#152D16
oklch(27% 0.051 144.9)
#3F8F45 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) | #91833F | 0.102 |
| Deuteranopia (no green cones) | #877C4A | 0.101 |
| Tritanopia (no blue cones) | #318C7E | 0.082 |
| Achromatopsia (no color) | #7F7F7F | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8F45
#3F8F45
oklch(58.2% 0.134 145)
- #A25CA6
#A25CA6
oklch(58.2% 0.134 325.2)
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 #3F8F45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.019
- Light Forest Green #4F9153 ΔE 0.025
- Sea Green #2E8B57 ΔE 0.030
- Kelley Green #009337 ΔE 0.036
- Moss Green #658B38 ΔE 0.037
- Mossy Green #638B27 ΔE 0.038
- Sap Green #5C8B15 ΔE 0.039
- Forest Green #228B22 ΔE 0.042
Use #3F8F45 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.