#3F2B2B
Closest named color: Gunmetal (#293241). oklch(31.3% 0.03 18.9), rgb(63, 43, 43).
Aa
White text reads best on this color (13.19:1).
About this color
#3F2B2B is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.051 away. White text reads best on it, at 13.19:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.59:1 |
| White text | 13.19:1 |
Values
| HEX | #3F2B2B |
| RGB | rgb(63, 43, 43) |
| HSL | hsl(0, 19%, 21%) |
| OKLCH | oklch(31.3% 0.03 18.9) |
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 #3F2B2B | 13.19:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #3F2B2B | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #3F2B2B text on white | 13.19:1 | AAA | Lc 99.5 | Preferred for body text |
| #3F2B2B text on black | 1.59:1 | 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 950.
-
Step 50
50
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E7
oklch(93.6% 0.011 17.4)
-
Step 200
200
#E6D4D4
oklch(88.5% 0.02 17.5)
-
Step 300
300
#D7B8B8
oklch(80.9% 0.036 17.9)
-
Step 400
400
#C29393
oklch(70.8% 0.057 18.6)
-
Step 500
500
#B17878
oklch(63.1% 0.072 19.3)
-
Step 600
600
#9C6061
oklch(55.6% 0.079 18.8)
-
Step 700
700
#854F50
oklch(49% 0.073 18.9)
-
Step 800
800
#6C4142
oklch(42.6% 0.06 18.4)
-
Step 900
900
#583738
oklch(37.6% 0.047 17.6)
-
Step 950
950 (this color)
#3F2B2B
oklch(31.3% 0.03 18.9)
#3F2B2B 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) | #2F2E2B | 0.031 |
| Deuteranopia (no green cones) | #33322B | 0.031 |
| Tritanopia (no blue cones) | #43292B | 0.010 |
| Achromatopsia (no color) | #303030 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2B2B
#3F2B2B
oklch(31.3% 0.03 18.9)
- #1E3637
#1E3637
oklch(31.4% 0.03 199.1)
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 #3F2B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.051
- Onyx #343A40 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.052
- Jet #212529 ΔE 0.063
- Chocolate Brown #411900 ΔE 0.065
- Charcoal Grey #3C4142 ΔE 0.069
- Pakistan Green #283618 ΔE 0.069
- Dark Brown #341C02 ΔE 0.071
Use #3F2B2B 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.