#3F4430
Closest named color: Charcoal Grey (#3C4142). oklch(37.6% 0.033 119.4), rgb(63, 68, 48).
Aa
White text reads best on this color (10.09:1).
About this color
#3F4430 is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.033 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.034 away. White text reads best on it, at 10.09:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #3F4430 |
| RGB | rgb(63, 68, 48) |
| HSL | hsl(75, 17%, 23%) |
| OKLCH | oklch(37.6% 0.033 119.4) |
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 #3F4430 | 10.09:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #3F4430 | 2.08:1 | Fails | Lc 10.5 | Not readable |
| #3F4430 text on white | 10.09:1 | AAA | Lc 93.4 | Preferred for body text |
| #3F4430 text on black | 2.08:1 | Fails | Lc -9.1 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE5
oklch(93.7% 0.008 121.6)
-
Step 200
200
#D8DBD1
oklch(88.6% 0.014 120.3)
-
Step 300
300
#BEC3B1
oklch(80.8% 0.025 119.6)
-
Step 400
400
#9DA589
oklch(70.8% 0.041 120.4)
-
Step 500
500
#858E6C
oklch(63% 0.05 119.9)
-
Step 600
600
#6F7853
oklch(55.5% 0.055 119.3)
-
Step 700
700
#5D6544
oklch(49.1% 0.051 119.4)
-
Step 800
800
#4C5338
oklch(42.8% 0.043 120.1)
-
Step 900
900 (this color)
#3F4430
oklch(37.6% 0.033 119.4)
-
Step 950
950
#25281C
oklch(27% 0.022 119.3)
#3F4430 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) | #47422F | 0.014 |
| Deuteranopia (no green cones) | #464231 | 0.013 |
| Tritanopia (no blue cones) | #41423F | 0.028 |
| Achromatopsia (no color) | #424242 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4430
#3F4430
oklch(37.6% 0.033 119.4)
- #443E51
#443E51
oklch(37.8% 0.033 299.3)
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 #3F4430, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.052
- Onyx #343A40 ΔE 0.053
- Dark Olive #373E02 ΔE 0.054
- Charcoal #264653 ΔE 0.062
- Evergreen #05472A ΔE 0.062
- Dark Blue Green #005249 ΔE 0.065
- Dark Teal #014D4E ΔE 0.066
Use #3F4430 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.