#3F4E31
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.2% 0.05 130.6), rgb(63, 78, 49).
Aa
White text reads best on this color (8.95:1).
About this color
#3F4E31 is a dark, muted green. In OKLCH its lightness is 40%, its chroma 0.050 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.048 away. White text reads best on it, at 8.95:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #3F4E31 |
| RGB | rgb(63, 78, 49) |
| HSL | hsl(91, 23%, 25%) |
| OKLCH | oklch(40.2% 0.05 130.6) |
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 #3F4E31 | 8.95:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #3F4E31 | 2.34:1 | Fails | Lc 13.4 | Not readable |
| #3F4E31 text on white | 8.95:1 | AAA | Lc 90.5 | Preferred for body text |
| #3F4E31 text on black | 2.34:1 | Fails | Lc -11.8 | Not readable |
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 800.
-
Step 50
50
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E8EBE5
oklch(93.6% 0.009 128.6)
-
Step 200
200
#D5DBD0
oklch(88.4% 0.016 130.4)
-
Step 300
300
#BAC5B1
oklch(80.9% 0.03 130.8)
-
Step 400
400
#97A789
oklch(70.7% 0.046 130.5)
-
Step 500
500
#7D916B
oklch(63% 0.06 130.5)
-
Step 600
600
#667B53
oklch(55.5% 0.064 130.8)
-
Step 700
700
#556843
oklch(49.1% 0.061 130.5)
-
Step 800
800 (this color)
#3F4E31
oklch(40.2% 0.05 130.6)
-
Step 900
900
#3A4630
oklch(37.7% 0.039 131.3)
-
Step 950
950
#22291C
oklch(27% 0.025 131)
#3F4E31 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) | #514A2F | 0.030 |
| Deuteranopia (no green cones) | #4E4932 | 0.028 |
| Tritanopia (no blue cones) | #404C47 | 0.038 |
| Achromatopsia (no color) | #494949 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4E31
#3F4E31
oklch(40.2% 0.05 130.6)
- #51415D
#51415D
oklch(40.3% 0.05 310.2)
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 #3F4E31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.048
- Green Brown #544E03 ΔE 0.049
- Pine #2B5D34 ΔE 0.051
- Navy Green #35530A ΔE 0.052
- Dark Blue Green #005249 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.059
- Mud Brown #60460F ΔE 0.059
- Spruce #0A5F38 ΔE 0.064
Use #3F4E31 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.