#3A001B
Closest named color: Dark Plum (#3F012C). oklch(22.6% 0.092 359), rgb(58, 0, 27).
Aa
White text reads best on this color (17.56:1).
About this color
#3A001B is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.092 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.034 away. White text reads best on it, at 17.56:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.19:1 |
| White text | 17.56:1 |
Values
| HEX | #3A001B |
| RGB | rgb(58, 0, 27) |
| HSL | hsl(332, 100%, 11%) |
| OKLCH | oklch(22.6% 0.092 359) |
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 #3A001B | 17.56:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #3A001B | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #3A001B text on white | 17.56:1 | AAA | Lc 103.4 | Preferred for body text |
| #3A001B text on black | 1.19:1 | 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
#FDE2E9
oklch(93.7% 0.031 0.2)
-
Step 200
200
#FCC9D8
oklch(88.5% 0.061 358.9)
-
Step 300
300
#FAA3BF
oklch(80.9% 0.108 359)
-
Step 400
400
#F36B9E
oklch(70.7% 0.174 359)
-
Step 500
500
#EA3586
oklch(63.1% 0.223 359.1)
-
Step 600
600
#D00070
oklch(55.6% 0.226 359.1)
-
Step 700
700
#B0005E
oklch(49.1% 0.2 359.1)
-
Step 800
800
#91004D
oklch(42.6% 0.173 358.7)
-
Step 900
900
#780A40
oklch(37.7% 0.145 358.8)
-
Step 950
950 (this color)
#3A001B
oklch(22.6% 0.092 359)
#3A001B 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) | #0D121C | 0.106 |
| Deuteranopia (no green cones) | #1E1D1A | 0.092 |
| Tritanopia (no blue cones) | #40000C | 0.032 |
| Achromatopsia (no color) | #191919 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A001B
#3A001B
oklch(22.6% 0.092 359)
- #00221C
#00221C
oklch(22.6% 0.041 178.5)
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 #3A001B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.034
- Dark Maroon #3C0008 ΔE 0.034
- Aubergine #3D0734 ΔE 0.048
- Eggplant #380835 ΔE 0.050
- Deep Brown #410200 ΔE 0.052
- Mahogany #4A0100 ΔE 0.062
- Very Dark Purple #2A0134 ΔE 0.068
- Dark Purple #35063E ΔE 0.069
Use #3A001B 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.