#3F3328
Closest named color: Onyx (#343A40). oklch(33.1% 0.025 64.3), rgb(63, 51, 40).
Aa
White text reads best on this color (12.24:1).
About this color
#3F3328 is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.041 away. White text reads best on it, at 12.24:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.71:1 |
| White text | 12.24:1 |
Values
| HEX | #3F3328 |
| RGB | rgb(63, 51, 40) |
| HSL | hsl(29, 22%, 20%) |
| OKLCH | oklch(33.1% 0.025 64.3) |
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 #3F3328 | 12.24:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #3F3328 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #3F3328 text on white | 12.24:1 | AAA | Lc 97.9 | Preferred for body text |
| #3F3328 text on black | 1.71:1 | Fails | Lc 0.0 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DED8D2
oklch(88.5% 0.011 67.7)
-
Step 300
300
#CABEB4
oklch(80.9% 0.019 62.4)
-
Step 400
400
#AF9D8D
oklch(70.7% 0.031 63.9)
-
Step 500
500
#9B8571
oklch(63.1% 0.04 64.3)
-
Step 600
600
#856E5A
oklch(55.5% 0.042 62.8)
-
Step 700
700
#715C49
oklch(49% 0.04 63.8)
-
Step 800
800
#5C4B3C
oklch(42.6% 0.033 63.2)
-
Step 900
900 (this color)
#3F3328
oklch(33.1% 0.025 64.3)
-
Step 950
950
#2C251E
oklch(27% 0.016 67)
#3F3328 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) | #373427 | 0.015 |
| Deuteranopia (no green cones) | #3A3628 | 0.013 |
| Tritanopia (no blue cones) | #433030 | 0.021 |
| Achromatopsia (no color) | #353535 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3328
#3F3328
oklch(33.1% 0.025 64.3)
- #2B3742
#2B3742
oklch(33.1% 0.025 246.3)
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 #3F3328, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.051
- Pakistan Green #283618 ΔE 0.052
- Gunmetal #293241 ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.066
- Dark Olive #373E02 ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.072
- Jet #212529 ΔE 0.077
Use #3F3328 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.