#3F3129
Closest named color: Onyx (#343A40). oklch(32.6% 0.025 51.3), rgb(63, 49, 41).
Aa
White text reads best on this color (12.47:1).
About this color
#3F3129 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 0.042 away. White text reads best on it, at 12.47:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.68:1 |
| White text | 12.47:1 |
Values
| HEX | #3F3129 |
| RGB | rgb(63, 49, 41) |
| HSL | hsl(22, 21%, 20%) |
| OKLCH | oklch(32.6% 0.025 51.3) |
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 #3F3129 | 12.47:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #3F3129 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #3F3129 text on white | 12.47:1 | AAA | Lc 98.4 | Preferred for body text |
| #3F3129 text on black | 1.68:1 | 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
#EDE9E7
oklch(93.7% 0.005 48.7)
-
Step 200
200
#DFD7D3
oklch(88.4% 0.01 48.6)
-
Step 300
300
#CBBEB6
oklch(81% 0.018 53.9)
-
Step 400
400
#B09C90
oklch(70.7% 0.029 53)
-
Step 500
500
#9D8375
oklch(63% 0.038 49.9)
-
Step 600
600
#886D5E
oklch(55.7% 0.041 50.6)
-
Step 700
700
#735B4D
oklch(49.1% 0.038 51.8)
-
Step 800
800
#5E4A3F
oklch(42.7% 0.033 50.3)
-
Step 900
900 (this color)
#3F3129
oklch(32.6% 0.025 51.3)
-
Step 950
950
#2D2420
oklch(26.9% 0.016 45.3)
#3F3129 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) | #353228 | 0.019 |
| Deuteranopia (no green cones) | #383529 | 0.018 |
| Tritanopia (no blue cones) | #432F2F | 0.016 |
| Achromatopsia (no color) | #343434 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3129
#3F3129
oklch(32.6% 0.025 51.3)
- #28373F
#28373F
oklch(32.7% 0.024 231.7)
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 #3F3129, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.042
- Gunmetal #293241 ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.055
- Pakistan Green #283618 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.072
- Jet #212529 ΔE 0.073
- Dark Olive #373E02 ΔE 0.074
Use #3F3129 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.