#3F0921
Closest named color: Dark Plum (#3F012C). oklch(25% 0.085 358.5), rgb(63, 9, 33).
Aa
White text reads best on this color (16.50:1).
About this color
#3F0921 is a dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.085 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.029 away. White text reads best on it, at 16.50:1.
| Hue family | Reds |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.27:1 |
| White text | 16.50:1 |
Values
| HEX | #3F0921 |
| RGB | rgb(63, 9, 33) |
| HSL | hsl(333, 75%, 14%) |
| OKLCH | oklch(25% 0.085 358.5) |
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 #3F0921 | 16.50:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #3F0921 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #3F0921 text on white | 16.50:1 | AAA | Lc 102.8 | Preferred for body text |
| #3F0921 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
#FBE2E9
oklch(93.5% 0.029 358.8)
-
Step 200
200
#F9CAD8
oklch(88.4% 0.056 358.6)
-
Step 300
300
#F6A5C0
oklch(80.8% 0.101 358)
-
Step 400
400
#EE709F
oklch(70.7% 0.162 358.6)
-
Step 500
500
#E44188
oklch(63.1% 0.207 358.4)
-
Step 600
600
#CF0571
oklch(55.6% 0.224 358.7)
-
Step 700
700
#B0005F
oklch(49.1% 0.2 358.6)
-
Step 800
800
#91024E
oklch(42.7% 0.173 358.3)
-
Step 900
900
#751441
oklch(37.8% 0.135 358.3)
-
Step 950
950 (this color)
#3F0921
oklch(25% 0.085 358.5)
#3F0921 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) | #151822 | 0.095 |
| Deuteranopia (no green cones) | #232320 | 0.087 |
| Tritanopia (no blue cones) | #450313 | 0.027 |
| Achromatopsia (no color) | #1F1F1F | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F0921
#3F0921
oklch(25% 0.085 358.5)
- #002922
#002922
oklch(25.1% 0.046 178.2)
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 #3F0921, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.029
- Aubergine #3D0734 ΔE 0.039
- Dark Maroon #3C0008 ΔE 0.042
- Eggplant #380835 ΔE 0.045
- Deep Brown #410200 ΔE 0.051
- Mahogany #4A0100 ΔE 0.055
- Eggplant Purple #430541 ΔE 0.062
- Dark Purple #35063E ΔE 0.065
Use #3F0921 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.