#3F101D
Closest named color: Dark Maroon (#3C0008). oklch(25.7% 0.074 7.1), rgb(63, 16, 29).
Aa
White text reads best on this color (16.11:1).
About this color
#3F101D is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.074 and its hue 7°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.041 away. White text reads best on it, at 16.11:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.30:1 |
| White text | 16.11:1 |
Values
| HEX | #3F101D |
| RGB | rgb(63, 16, 29) |
| HSL | hsl(343, 59%, 15%) |
| OKLCH | oklch(25.7% 0.074 7.1) |
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 #3F101D | 16.11:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #3F101D | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #3F101D text on white | 16.11:1 | AAA | Lc 102.6 | Preferred for body text |
| #3F101D text on black | 1.30:1 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F7CCD3
oklch(88.4% 0.049 7.1)
-
Step 300
300
#F2A9B7
oklch(80.8% 0.088 6.6)
-
Step 400
400
#E87891
oklch(70.6% 0.14 7.2)
-
Step 500
500
#DE5076
oklch(63.2% 0.179 7.5)
-
Step 600
600
#C92B5F
oklch(55.6% 0.194 7.3)
-
Step 700
700
#AD1A4F
oklch(49.1% 0.181 6.9)
-
Step 800
800
#8D1B41
oklch(42.8% 0.15 7)
-
Step 900
900
#711E37
oklch(37.6% 0.117 6.7)
-
Step 950
950 (this color)
#3F101D
oklch(25.7% 0.074 7.1)
#3F101D 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) | #1A1B1D | 0.083 |
| Deuteranopia (no green cones) | #27241C | 0.074 |
| Tritanopia (no blue cones) | #450915 | 0.019 |
| Achromatopsia (no color) | #212121 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F101D
#3F101D
oklch(25.7% 0.074 7.1)
- #002A27
#002A27
oklch(25.7% 0.045 187.5)
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 #3F101D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.041
- Deep Brown #410200 ΔE 0.044
- Mahogany #4A0100 ΔE 0.046
- Dark Plum #3F012C ΔE 0.046
- Aubergine #3D0734 ΔE 0.052
- Chocolate Brown #411900 ΔE 0.054
- Eggplant #380835 ΔE 0.057
- Dark Brown #341C02 ΔE 0.064
Use #3F101D 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.