#3F431D
Closest named color: Dark Olive (#373E02). oklch(36.9% 0.058 114.2), rgb(63, 67, 29).
Aa
White text reads best on this color (10.33:1).
About this color
#3F431D is a dark, muted brown. In OKLCH its lightness is 37%, its chroma 0.058 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.031 away. White text reads best on it, at 10.33:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 2.03:1 |
| White text | 10.33:1 |
Values
| HEX | #3F431D |
| RGB | rgb(63, 67, 29) |
| HSL | hsl(66, 40%, 19%) |
| OKLCH | oklch(36.9% 0.058 114.2) |
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 #3F431D | 10.33:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #3F431D | 2.03:1 | Fails | Lc 10.0 | Not readable |
| #3F431D text on white | 10.33:1 | AAA | Lc 94.0 | Preferred for body text |
| #3F431D text on black | 2.03:1 | Fails | Lc -8.6 | 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 900.
-
Step 50
50
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E9EBE2
oklch(93.6% 0.012 116.8)
-
Step 200
200
#D8DBC9
oklch(88.4% 0.024 114.6)
-
Step 300
300
#C0C4A5
oklch(80.9% 0.042 113.3)
-
Step 400
400
#9FA674
oklch(70.7% 0.069 114.7)
-
Step 500
500
#88904F
oklch(63.2% 0.089 114.7)
-
Step 600
600
#727931
oklch(55.4% 0.096 114.2)
-
Step 700
700
#606624
oklch(49.1% 0.089 114.1)
-
Step 800
800
#4E531F
oklch(42.6% 0.074 114.2)
-
Step 900
900 (this color)
#3F431D
oklch(36.9% 0.058 114.2)
-
Step 950
950
#262813
oklch(26.9% 0.036 113.3)
#3F431D 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) | #48401A | 0.017 |
| Deuteranopia (no green cones) | #47411F | 0.016 |
| Tritanopia (no blue cones) | #433F3A | 0.051 |
| Achromatopsia (no color) | #404040 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F431D
#3F431D
oklch(36.9% 0.058 114.2)
- #41395B
#41395B
oklch(36.8% 0.058 294.2)
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 #3F431D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.031
- Green Brown #544E03 ΔE 0.057
- Evergreen #05472A ΔE 0.058
- Pine Green #0A481E ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.059
- Pakistan Green #283618 ΔE 0.060
- Mud Brown #60460F ΔE 0.060
- Navy Green #35530A ΔE 0.060
Use #3F431D 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.