#3F4D01
Closest named color: Navy Green (#35530A). oklch(39.4% 0.094 120.9), rgb(63, 77, 1).
Aa
White text reads best on this color (9.23:1).
About this color
#3F4D01 is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.094 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Navy Green (#35530A), ΔE 0.021 away. White text reads best on it, at 9.23:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Navy Green (#35530A) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #3F4D01 |
| RGB | rgb(63, 77, 1) |
| HSL | hsl(71, 97%, 15%) |
| OKLCH | oklch(39.4% 0.094 120.9) |
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 #3F4D01 | 9.23:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #3F4D01 | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #3F4D01 text on white | 9.23:1 | AAA | Lc 91.2 | Preferred for body text |
| #3F4D01 text on black | 2.27:1 | Fails | Lc -11.2 | 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 900.
-
Step 50
50
#F4F6F0
oklch(97% 0.008 121.6)
-
Step 100
100
#E8ECDD
oklch(93.6% 0.02 118.9)
-
Step 200
200
#D5DEC1
oklch(88.6% 0.04 121.2)
-
Step 300
300
#BAC895
oklch(80.9% 0.07 120.5)
-
Step 400
400
#96AB57
oklch(70.6% 0.113 120.9)
-
Step 500
500
#7D9618
oklch(63.2% 0.144 121.1)
-
Step 600
600
#687E00
oklch(55.5% 0.133 121.1)
-
Step 700
700
#576A00
oklch(49.1% 0.118 121.1)
-
Step 800
800
#475700
oklch(42.8% 0.103 121.1)
-
Step 900
900 (this color)
#3F4D01
oklch(39.4% 0.094 120.9)
-
Step 950
950
#222B04
oklch(27.1% 0.06 121.8)
#3F4D01 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) | #534800 | 0.035 |
| Deuteranopia (no green cones) | #51470A | 0.036 |
| Tritanopia (no blue cones) | #434840 | 0.079 |
| Achromatopsia (no color) | #474747 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4D01
#3F4D01
oklch(39.4% 0.094 120.9)
- #4F3870
#4F3870
oklch(39.3% 0.094 301.1)
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 #3F4D01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Green #35530A ΔE 0.021
- Green Brown #544E03 ΔE 0.035
- Dark Olive #373E02 ΔE 0.051
- Forest #0B5509 ΔE 0.052
- Army Green #4B5D16 ΔE 0.055
- Pine #2B5D34 ΔE 0.057
- Deep Green #02590F ΔE 0.057
- Bottle Green #044A05 ΔE 0.060
Use #3F4D01 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.