#3F5739
Closest named color: Pine (#2B5D34). oklch(42.8% 0.056 139.5), rgb(63, 87, 57).
Aa
White text reads best on this color (7.97:1).
About this color
#3F5739 is a dark, muted green. In OKLCH its lightness is 43%, its chroma 0.056 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pine (#2B5D34), ΔE 0.032 away. White text reads best on it, at 7.97:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Pine (#2B5D34) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #3F5739 |
| RGB | rgb(63, 87, 57) |
| HSL | hsl(108, 21%, 28%) |
| OKLCH | oklch(42.8% 0.056 139.5) |
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 #3F5739 | 7.97:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #3F5739 | 2.63:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #3F5739 text on white | 7.97:1 | AAA | Lc 87.6 | Fine for body text |
| #3F5739 text on black | 2.63:1 | Fails | Lc -14.5 | 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
#D3DCD1
oklch(88.5% 0.018 140)
-
Step 300
300
#B6C6B2
oklch(80.9% 0.033 139.4)
-
Step 400
400
#90A98A
oklch(70.7% 0.052 139.6)
-
Step 500
500
#74946D
oklch(63.1% 0.067 140)
-
Step 600
600
#5D7E54
oklch(55.6% 0.073 139.1)
-
Step 700
700
#4C6A45
oklch(49% 0.067 139.8)
-
Step 800
800 (this color)
#3F5739
oklch(42.8% 0.056 139.5)
-
Step 900
900
#354731
oklch(37.6% 0.043 140)
-
Step 950
950
#1F2A1D
oklch(27% 0.028 140.7)
#3F5739 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) | #595237 | 0.040 |
| Deuteranopia (no green cones) | #55503B | 0.039 |
| Tritanopia (no blue cones) | #3E554F | 0.037 |
| Achromatopsia (no color) | #515151 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5739
#3F5739
oklch(42.8% 0.056 139.5)
- #5D4563
#5D4563
oklch(42.8% 0.057 319.5)
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 #3F5739, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pine #2B5D34 ΔE 0.032
- Spruce #0A5F38 ΔE 0.048
- Army Green #4B5D16 ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.051
- Green Brown #544E03 ΔE 0.053
- Dark Slate Gray #2F4F4F ΔE 0.054
- Navy Green #35530A ΔE 0.054
- Dark Blue Green #005249 ΔE 0.059
Use #3F5739 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.