#39001B
Closest named color: Dark Plum (#3F012C). oklch(22.4% 0.091 358.3), rgb(57, 0, 27).
Aa
White text reads best on this color (17.65:1).
About this color
#39001B is a very dark, moderately saturated red. In OKLCH its lightness is 22%, its chroma 0.091 and its hue 358°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.035 away. White text reads best on it, at 17.65:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.18:1 |
| White text | 17.65:1 |
Values
| HEX | #39001B |
| RGB | rgb(57, 0, 27) |
| HSL | hsl(332, 100%, 11%) |
| OKLCH | oklch(22.4% 0.091 358.3) |
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 #39001B | 17.65:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #39001B | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #39001B text on white | 17.65:1 | AAA | Lc 103.5 | Preferred for body text |
| #39001B text on black | 1.18:1 | 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
#FCC9D9
oklch(88.5% 0.061 357.7)
-
Step 300
300
#FAA3C0
oklch(80.9% 0.108 358.3)
-
Step 400
400
#F26C9F
oklch(70.7% 0.172 358.6)
-
Step 500
500
#E93788
oklch(63.1% 0.221 358.4)
-
Step 600
600
#D00072
oklch(55.7% 0.227 358.4)
-
Step 700
700
#B00060
oklch(49.2% 0.2 358.2)
-
Step 800
800
#91004E
oklch(42.7% 0.174 358.2)
-
Step 900
900
#770C41
oklch(37.6% 0.144 358)
-
Step 950
950 (this color)
#39001B
oklch(22.4% 0.091 358.3)
#39001B 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) | #0D111C | 0.104 |
| Deuteranopia (no green cones) | #1D1D1A | 0.093 |
| Tritanopia (no blue cones) | #3F000C | 0.032 |
| Achromatopsia (no color) | #191919 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39001B
#39001B
oklch(22.4% 0.091 358.3)
- #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 #39001B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.035
- Dark Maroon #3C0008 ΔE 0.035
- Aubergine #3D0734 ΔE 0.048
- Eggplant #380835 ΔE 0.050
- Deep Brown #410200 ΔE 0.053
- Mahogany #4A0100 ΔE 0.064
- Very Dark Purple #2A0134 ΔE 0.066
- Dark Purple #35063E ΔE 0.068
Use #39001B 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.