#3D0021
Closest named color: Dark Plum (#3F012C). oklch(23.5% 0.097 354.3), rgb(61, 0, 33).
Aa
White text reads best on this color (17.20:1).
About this color
#3D0021 is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.097 and its hue 354°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.021 away. White text reads best on it, at 17.20:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.097) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.22:1 |
| White text | 17.20:1 |
Values
| HEX | #3D0021 |
| RGB | rgb(61, 0, 33) |
| HSL | hsl(328, 100%, 12%) |
| OKLCH | oklch(23.5% 0.097 354.3) |
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 #3D0021 | 17.20:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #3D0021 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #3D0021 text on white | 17.20:1 | AAA | Lc 103.1 | Preferred for body text |
| #3D0021 text on black | 1.22:1 | 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
#FFF1F6
oklch(97.1% 0.016 353.6)
-
Step 100
100
#FDE1EB
oklch(93.5% 0.033 354.1)
-
Step 200
200
#FCC8DC
oklch(88.4% 0.064 353.5)
-
Step 300
300
#FBA1C5
oklch(80.9% 0.115 354.4)
-
Step 400
400
#F468A8
oklch(70.8% 0.183 354.3)
-
Step 500
500
#EB2D92
oklch(63.1% 0.234 354.4)
-
Step 600
600
#CE007C
oklch(55.7% 0.229 354.2)
-
Step 700
700
#AE0068
oklch(49.1% 0.202 354.2)
-
Step 800
800
#900055
oklch(42.7% 0.176 354.3)
-
Step 900
900
#780347
oklch(37.6% 0.153 353.9)
-
Step 950
950 (this color)
#3D0021
oklch(23.5% 0.097 354.3)
#3D0021 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) | #0D1422 | 0.111 |
| Deuteranopia (no green cones) | #1F1F20 | 0.096 |
| Tritanopia (no blue cones) | #43000F | 0.038 |
| Achromatopsia (no color) | #1B1B1B | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D0021
#3D0021
oklch(23.5% 0.097 354.3)
- #00251D
#00251D
oklch(23.6% 0.045 174.8)
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 #3D0021, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.021
- Aubergine #3D0734 ΔE 0.036
- Eggplant #380835 ΔE 0.041
- Dark Maroon #3C0008 ΔE 0.044
- Deep Brown #410200 ΔE 0.059
- Dark Purple #35063E ΔE 0.060
- Eggplant Purple #430541 ΔE 0.061
- Deep Purple #36013F ΔE 0.062
Use #3D0021 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.