#3F904B
Closest named color: Fern Green (#548D44). oklch(58.6% 0.13 146.7), rgb(63, 144, 75).
Aa
Black text reads best on this color (5.30:1).
About this color
#3F904B is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.130 and its hue 147°. 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 5.30:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.30:1 |
| White text | 3.96:1 |
Values
| HEX | #3F904B |
| RGB | rgb(63, 144, 75) |
| HSL | hsl(129, 39%, 41%) |
| OKLCH | oklch(58.6% 0.13 146.7) |
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 #3F904B | 3.96:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #3F904B | 5.30:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #3F904B text on white | 3.96:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #3F904B text on black | 5.30:1 | AA | Lc -35.0 | 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
#CCDFCD
oklch(88.4% 0.032 146.8)
-
Step 300
300
#A9CBAB
oklch(80.8% 0.057 146.6)
-
Step 400
400
#79B17E
oklch(70.8% 0.094 146.7)
-
Step 500
500
#549D5D
oklch(63.2% 0.12 146.7)
-
Step 600
600 (this color)
#3F904B
oklch(58.6% 0.13 146.7)
-
Step 700
700
#277234
oklch(49% 0.12 146.6)
-
Step 800
800
#225D2C
oklch(42.7% 0.1 146.8)
-
Step 900
900
#224C28
oklch(37.6% 0.077 146.9)
-
Step 950
950
#152D18
oklch(27.1% 0.049 146.9)
#3F904B 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) | #928446 | 0.103 |
| Deuteranopia (no green cones) | #877D50 | 0.101 |
| Tritanopia (no blue cones) | #2F8D80 | 0.077 |
| Achromatopsia (no color) | #808080 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F904B
#3F904B
oklch(58.6% 0.13 146.7)
- #A35EA4
#A35EA4
oklch(58.5% 0.129 326.6)
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 #3F904B, 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 0.019
- Sea Green #2E8B57 ΔE 0.027
- Viridian #1E9167 ΔE 0.037
- Moss Green #658B38 ΔE 0.038
- Kelley Green #009337 ΔE 0.040
- Mossy Green #638B27 ΔE 0.041
- Sap Green #5C8B15 ΔE 0.044
Use #3F904B 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.