#3F5437
Closest named color: Pine (#2B5D34). oklch(42% 0.053 137.3), rgb(63, 84, 55).
Aa
White text reads best on this color (8.28:1).
About this color
#3F5437 is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.053 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pine (#2B5D34), ΔE 0.037 away. White text reads best on it, at 8.28:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Pine (#2B5D34) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #3F5437 |
| RGB | rgb(63, 84, 55) |
| HSL | hsl(103, 21%, 27%) |
| OKLCH | oklch(42% 0.053 137.3) |
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 #3F5437 | 8.28:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #3F5437 | 2.53:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #3F5437 text on white | 8.28:1 | AAA | Lc 88.6 | Fine for body text |
| #3F5437 text on black | 2.53:1 | Fails | Lc -13.6 | 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
#E7EBE5
oklch(93.5% 0.009 134.9)
-
Step 200
200
#D4DCD1
oklch(88.5% 0.017 137)
-
Step 300
300
#B7C6B2
oklch(80.9% 0.032 137.8)
-
Step 400
400
#92A88A
oklch(70.6% 0.049 137.4)
-
Step 500
500
#77936D
oklch(63.1% 0.064 137.6)
-
Step 600
600
#607D55
oklch(55.6% 0.069 137.3)
-
Step 700
700
#4F6945
oklch(49% 0.064 137.2)
-
Step 800
800 (this color)
#3F5437
oklch(42% 0.053 137.3)
-
Step 900
900
#374731
oklch(37.7% 0.042 137.3)
-
Step 950
950
#202A1D
oklch(27.1% 0.027 138.5)
#3F5437 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) | #564F35 | 0.037 |
| Deuteranopia (no green cones) | #534E39 | 0.036 |
| Tritanopia (no blue cones) | #3E524C | 0.036 |
| Achromatopsia (no color) | #4E4E4E | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5437
#3F5437
oklch(42% 0.053 137.3)
- #594460
#594460
oklch(42% 0.053 317.5)
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 #3F5437, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pine #2B5D34 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.049
- Green Brown #544E03 ΔE 0.051
- Spruce #0A5F38 ΔE 0.052
- Navy Green #35530A ΔE 0.053
- Army Green #4B5D16 ΔE 0.055
- Dark Blue Green #005249 ΔE 0.056
- Dark Green Blue #1F6357 ΔE 0.058
Use #3F5437 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.