#3F7D31
Closest named color: Tree Green (#2A7E19). oklch(53% 0.127 140.1), rgb(63, 125, 49).
Aa
White text reads best on this color (5.01:1).
About this color
#3F7D31 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.127 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.030 away. White text reads best on it, at 5.01:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #3F7D31 |
| RGB | rgb(63, 125, 49) |
| HSL | hsl(109, 44%, 34%) |
| OKLCH | oklch(53% 0.127 140.1) |
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 #3F7D31 | 5.01:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #3F7D31 | 4.18:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #3F7D31 text on white | 5.01:1 | AA | Lc 74.4 | Content text, not long reading |
| #3F7D31 text on black | 4.18:1 | AA large text | Lc -27.3 | Dividers and decoration only |
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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E4EDE2
oklch(93.6% 0.017 140)
-
Step 200
200
#CEDFCB
oklch(88.5% 0.033 141)
-
Step 300
300
#AECAA7
oklch(80.9% 0.057 139.4)
-
Step 400
400
#82AF78
oklch(70.7% 0.092 139.9)
-
Step 500
500
#619B55
oklch(63.2% 0.118 140.2)
-
Step 600
600 (this color)
#3F7D31
oklch(53% 0.127 140.1)
-
Step 700
700
#38702B
oklch(49% 0.118 140)
-
Step 800
800
#2F5C25
oklch(42.9% 0.098 140.1)
-
Step 900
900
#2A4B23
oklch(37.6% 0.076 140.2)
-
Step 950
950
#192C15
oklch(27% 0.048 140.2)
#3F7D31 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) | #807329 | 0.086 |
| Deuteranopia (no green cones) | #786D37 | 0.087 |
| Tritanopia (no blue cones) | #39796C | 0.085 |
| Achromatopsia (no color) | #6F6F6F | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7D31
#3F7D31
oklch(53% 0.127 140.1)
- #8C5199
#8C5199
oklch(53.1% 0.127 320.2)
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 #3F7D31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.030
- Jungle Green #048243 ΔE 0.031
- Dark Grass Green #388004 ΔE 0.034
- Olive Green #677A04 ΔE 0.047
- Forest Green #228B22 ΔE 0.050
- Sea Green #2E8B57 ΔE 0.050
- Muddy Green #657432 ΔE 0.051
- Military Green #667C3E ΔE 0.051
Use #3F7D31 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.