#3F8742
Closest named color: Sea Green (#2E8B57). oklch(56% 0.126 144.4), rgb(63, 135, 66).
Aa
Black text reads best on this color (4.75:1).
About this color
#3F8742 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.126 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.025 away. Black text reads best on it, at 4.75:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #3F8742 |
| RGB | rgb(63, 135, 66) |
| HSL | hsl(122, 36%, 39%) |
| OKLCH | oklch(56% 0.126 144.4) |
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 #3F8742 | 4.41:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #3F8742 | 4.75:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #3F8742 text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #3F8742 text on black | 4.75:1 | AA | Lc -31.3 | 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
#E4EDE3
oklch(93.7% 0.016 142.6)
-
Step 200
200
#CDDFCD
oklch(88.5% 0.031 145.3)
-
Step 300
300
#ABCBAA
oklch(81% 0.057 144.2)
-
Step 400
400
#7DB07D
oklch(70.8% 0.091 144.5)
-
Step 500
500
#5A9C5B
oklch(63.2% 0.117 144.4)
-
Step 600
600 (this color)
#3F8742
oklch(56% 0.126 144.4)
-
Step 700
700
#2F7133
oklch(49% 0.116 144.6)
-
Step 800
800
#285C2B
oklch(42.6% 0.096 144.7)
-
Step 900
900
#264C27
oklch(37.8% 0.075 144.4)
-
Step 950
950
#172C17
oklch(26.9% 0.047 144.1)
#3F8742 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) | #897C3C | 0.094 |
| Deuteranopia (no green cones) | #807547 | 0.095 |
| Tritanopia (no blue cones) | #348477 | 0.077 |
| Achromatopsia (no color) | #787878 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8742
#3F8742
oklch(56% 0.126 144.4)
- #98589D
#98589D
oklch(55.9% 0.126 324.4)
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 #3F8742, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.025
- Fern Green #548D44 ΔE 0.029
- Jungle Green #048243 ΔE 0.035
- Light Forest Green #4F9153 ΔE 0.038
- Dark Sage #598556 ΔE 0.042
- Moss Green #658B38 ΔE 0.043
- Forest Green #228B22 ΔE 0.043
- Swamp #698339 ΔE 0.044
Use #3F8742 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.