#3F042A
Closest named color: Dark Plum (#3F012C). oklch(24.9% 0.097 347.1), rgb(63, 4, 42).
Aa
White text reads best on this color (16.63:1).
About this color
#3F042A is a very dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.097 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Plum (#3F012C), ΔE 0.008 away. White text reads best on it, at 16.63:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.097) |
| Temperature | warm |
| Nearest name | Dark Plum (#3F012C) |
| Black text | 1.26:1 |
| White text | 16.63:1 |
Values
| HEX | #3F042A |
| RGB | rgb(63, 4, 42) |
| HSL | hsl(321, 88%, 13%) |
| OKLCH | oklch(24.9% 0.097 347.1) |
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 #3F042A | 16.63:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #3F042A | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #3F042A text on white | 16.63:1 | AAA | Lc 102.7 | Preferred for body text |
| #3F042A text on black | 1.26:1 | 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
#FEF1F7
oklch(97% 0.016 347.6)
-
Step 100
100
#FCE1EE
oklch(93.5% 0.034 347.1)
-
Step 200
200
#FAC9E1
oklch(88.5% 0.063 347.5)
-
Step 300
300
#F7A2CF
oklch(80.9% 0.115 347)
-
Step 400
400
#EF69B6
oklch(70.7% 0.184 347.3)
-
Step 500
500
#E531A4
oklch(63.1% 0.236 347.1)
-
Step 600
600
#CA008D
oklch(55.7% 0.235 347.1)
-
Step 700
700
#AB0077
oklch(49.2% 0.207 347)
-
Step 800
800
#8D0061
oklch(42.7% 0.18 347.2)
-
Step 900
900
#750751
oklch(37.7% 0.153 346.9)
-
Step 950
950 (this color)
#3F042A
oklch(24.9% 0.097 347.1)
#3F042A 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) | #0D182B | 0.110 |
| Deuteranopia (no green cones) | #1F2229 | 0.096 |
| Tritanopia (no blue cones) | #440216 | 0.040 |
| Achromatopsia (no color) | #1E1E1E | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F042A
#3F042A
oklch(24.9% 0.097 347.1)
- #00291C
#00291C
oklch(24.9% 0.051 166.7)
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 #3F042A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Plum #3F012C ΔE 0.008
- Aubergine #3D0734 ΔE 0.020
- Eggplant #380835 ΔE 0.027
- Eggplant Purple #430541 ΔE 0.044
- Dark Purple #35063E ΔE 0.047
- Deep Purple #36013F ΔE 0.050
- Deep Violet #490648 ΔE 0.059
- Dark Maroon #3C0008 ΔE 0.059
Use #3F042A 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.