#3F091F
Closest named color: Dark Plum (#3F012C). oklch(24.9% 0.084 1), rgb(63, 9, 31).
Aa
White text reads best on this color (16.53:1).
About this color
#3F091F is a very dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.084 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.033 away. White text reads best on it, at 16.53:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.27:1 |
| White text | 16.53:1 |
Values
| HEX | #3F091F |
| RGB | rgb(63, 9, 31) |
| HSL | hsl(336, 75%, 14%) |
| OKLCH | oklch(24.9% 0.084 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 #3F091F | 16.53:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #3F091F | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #3F091F text on white | 16.53:1 | AAA | Lc 102.8 | Preferred for body text |
| #3F091F text on black | 1.27:1 | 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
#FEF2F5
oklch(97.1% 0.013 0.3)
-
Step 100
100
#FCE2E9
oklch(93.6% 0.03 359.5)
-
Step 200
200
#FACBD7
oklch(88.6% 0.055 1.2)
-
Step 300
300
#F7A5BD
oklch(80.9% 0.101 0.5)
-
Step 400
400
#EE719B
oklch(70.7% 0.159 0.8)
-
Step 500
500
#E54282
oklch(63.2% 0.204 1.1)
-
Step 600
600
#D0086C
oklch(55.7% 0.222 0.9)
-
Step 700
700
#B1005A
oklch(49.2% 0.199 1.1)
-
Step 800
800
#920349
oklch(42.8% 0.171 1.3)
-
Step 900
900
#75153D
oklch(37.7% 0.133 1.3)
-
Step 950
950 (this color)
#3F091F
oklch(24.9% 0.084 1)
#3F091F 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) | #151820 | 0.095 |
| Deuteranopia (no green cones) | #24231E | 0.086 |
| Tritanopia (no blue cones) | #450213 | 0.024 |
| Achromatopsia (no color) | #1F1F1F | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F091F
#3F091F
oklch(24.9% 0.084 1)
- #002823
#002823
oklch(24.8% 0.044 182.5)
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 #3F091F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.033
- Dark Maroon #3C0008 ΔE 0.039
- Aubergine #3D0734 ΔE 0.042
- Deep Brown #410200 ΔE 0.048
- Eggplant #380835 ΔE 0.048
- Mahogany #4A0100 ΔE 0.051
- Eggplant Purple #430541 ΔE 0.066
- Chocolate Brown #411900 ΔE 0.068
Use #3F091F 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.