#3F4433
Closest named color: Charcoal Grey (#3C4142). oklch(37.7% 0.029 121.1), rgb(63, 68, 51).
Aa
White text reads best on this color (10.06:1).
About this color
#3F4433 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.030 away. White text reads best on it, at 10.06:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.08:1 |
| White text | 10.06:1 |
Values
| HEX | #3F4433 |
| RGB | rgb(63, 68, 51) |
| HSL | hsl(78, 14%, 23%) |
| OKLCH | oklch(37.7% 0.029 121.1) |
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 #3F4433 | 10.06:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #3F4433 | 2.08:1 | Fails | Lc 10.5 | Not readable |
| #3F4433 text on white | 10.06:1 | AAA | Lc 93.4 | Preferred for body text |
| #3F4433 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E9EAE6
oklch(93.5% 0.005 117.9)
-
Step 200
200
#D8DAD2
oklch(88.5% 0.011 118)
-
Step 300
300
#BEC3B4
oklch(80.9% 0.021 121.9)
-
Step 400
400
#9DA48D
oklch(70.7% 0.034 121)
-
Step 500
500
#858E70
oklch(63.1% 0.045 121.2)
-
Step 600
600
#6F7859
oklch(55.6% 0.047 121.1)
-
Step 700
700
#5D6548
oklch(49.2% 0.045 120.6)
-
Step 800
800
#4C523C
oklch(42.7% 0.036 120.3)
-
Step 900
900 (this color)
#3F4433
oklch(37.7% 0.029 121.1)
-
Step 950
950
#25281E
oklch(27% 0.018 121.2)
#3F4433 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) | #464232 | 0.012 |
| Deuteranopia (no green cones) | #464234 | 0.013 |
| Tritanopia (no blue cones) | #40423F | 0.023 |
| Achromatopsia (no color) | #424242 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4433
#3F4433
oklch(37.7% 0.029 121.1)
- #443E4F
#443E4F
oklch(37.7% 0.03 301.1)
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 #3F4433, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.049
- Onyx #343A40 ΔE 0.050
- Charcoal #264653 ΔE 0.058
- Dark Olive #373E02 ΔE 0.058
- Dark Teal #014D4E ΔE 0.064
- Dark Blue Green #005249 ΔE 0.064
- Evergreen #05472A ΔE 0.064
Use #3F4433 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.