#3F903D
Closest named color: Fern Green (#548D44). oklch(58.3% 0.143 143.1), rgb(63, 144, 61).
Aa
Black text reads best on this color (5.26:1).
About this color
#3F903D is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.143 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.024 away. Black text reads best on it, at 5.26:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.26:1 |
| White text | 3.98:1 |
Values
| HEX | #3F903D |
| RGB | rgb(63, 144, 61) |
| HSL | hsl(119, 40%, 40%) |
| OKLCH | oklch(58.3% 0.143 143.1) |
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 #3F903D | 3.98:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #3F903D | 5.26:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #3F903D text on white | 3.98:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #3F903D text on black | 5.26:1 | AA | Lc -34.8 | 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
#E3EDE2
oklch(93.6% 0.018 142.8)
-
Step 200
200
#CCE0CA
oklch(88.6% 0.037 142.7)
-
Step 300
300
#A9CCA6
oklch(80.9% 0.065 142.9)
-
Step 400
400
#79B176
oklch(70.6% 0.103 143.2)
-
Step 500
500
#549D52
oklch(63% 0.131 143.3)
-
Step 600
600 (this color)
#3F903D
oklch(58.3% 0.143 143.1)
-
Step 700
700
#287327
oklch(49.2% 0.133 143)
-
Step 800
800
#235E22
oklch(42.8% 0.111 143.1)
-
Step 900
900
#224D21
oklch(37.8% 0.086 143.2)
-
Step 950
950
#152D14
oklch(27% 0.054 143.1)
#3F903D 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) | #938435 | 0.104 |
| Deuteranopia (no green cones) | #887D43 | 0.103 |
| Tritanopia (no blue cones) | #338C7E | 0.092 |
| Achromatopsia (no color) | #7F7F7F | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F903D
#3F903D
oklch(58.3% 0.143 143.1)
- #A35AAC
#A35AAC
oklch(58.3% 0.144 323.1)
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 #3F903D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.024
- Kelley Green #009337 ΔE 0.029
- Light Forest Green #4F9153 ΔE 0.032
- Sap Green #5C8B15 ΔE 0.033
- Mossy Green #638B27 ΔE 0.035
- Forest Green #228B22 ΔE 0.036
- Moss Green #658B38 ΔE 0.038
- Irish Green #019529 ΔE 0.039
Use #3F903D 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.