#3F382D
Closest named color: Onyx (#343A40). oklch(34.4% 0.021 79.1), rgb(63, 56, 45).
Aa
White text reads best on this color (11.57:1).
About this color
#3F382D is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.034 away. White text reads best on it, at 11.57:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.81:1 |
| White text | 11.57:1 |
Values
| HEX | #3F382D |
| RGB | rgb(63, 56, 45) |
| HSL | hsl(37, 17%, 21%) |
| OKLCH | oklch(34.4% 0.021 79.1) |
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 #3F382D | 11.57:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #3F382D | 1.81:1 | Fails | Lc 0.0 | Not readable |
| #3F382D text on white | 11.57:1 | AAA | Lc 96.6 | Preferred for body text |
| #3F382D text on black | 1.81:1 | 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#EBE9E6
oklch(93.5% 0.005 78.3)
-
Step 200
200
#DCD8D3
oklch(88.4% 0.008 73.7)
-
Step 300
300
#C6C0B6
oklch(81% 0.015 80.7)
-
Step 400
400
#A99F90
oklch(70.7% 0.024 78.2)
-
Step 500
500
#948874
oklch(63.2% 0.032 80.6)
-
Step 600
600
#7E715D
oklch(55.5% 0.034 78.6)
-
Step 700
700
#6B5F4C
oklch(49.2% 0.033 79.2)
-
Step 800
800
#574E3F
oklch(42.8% 0.027 80.5)
-
Step 900
900 (this color)
#3F382D
oklch(34.4% 0.021 79.1)
-
Step 950
950
#2A261F
oklch(27.1% 0.014 81.7)
#3F382D 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) | #3B382C | 0.008 |
| Deuteranopia (no green cones) | #3D3A2D | 0.007 |
| Tritanopia (no blue cones) | #423635 | 0.018 |
| Achromatopsia (no color) | #393939 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F382D
#3F382D
oklch(34.4% 0.021 79.1)
- #333A44
#333A44
oklch(34.6% 0.02 257.3)
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 #3F382D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.037
- Pakistan Green #283618 ΔE 0.054
- Gunmetal #293241 ΔE 0.058
- Dark Olive #373E02 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.067
- Charcoal #264653 ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.070
Use #3F382D 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.