#3F121B
Closest named color: Dark Maroon (#3C0008). oklch(25.9% 0.07 11.4), rgb(63, 18, 27).
Aa
White text reads best on this color (15.98:1).
About this color
#3F121B is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.070 and its hue 11°. 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 15.98:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.070) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.31:1 |
| White text | 15.98:1 |
Values
| HEX | #3F121B |
| RGB | rgb(63, 18, 27) |
| HSL | hsl(348, 56%, 16%) |
| OKLCH | oklch(25.9% 0.07 11.4) |
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 #3F121B | 15.98:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #3F121B | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #3F121B text on white | 15.98:1 | AAA | Lc 102.5 | Preferred for body text |
| #3F121B text on black | 1.31:1 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#FAE4E6
oklch(93.7% 0.024 11.3)
-
Step 200
200
#F6CDD1
oklch(88.4% 0.047 11.4)
-
Step 300
300
#F1ABB3
oklch(81% 0.083 11.5)
-
Step 400
400
#E67B8B
oklch(70.7% 0.133 11.6)
-
Step 500
500
#DC546F
oklch(63.2% 0.171 11.4)
-
Step 600
600
#C73257
oklch(55.6% 0.185 11.5)
-
Step 700
700
#AB2247
oklch(49% 0.172 11.4)
-
Step 800
800
#8B1F3B
oklch(42.6% 0.143 11)
-
Step 900
900
#702132
oklch(37.7% 0.111 11.5)
-
Step 950
950 (this color)
#3F121B
oklch(25.9% 0.07 11.4)
#3F121B 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) | #1C1C1B | 0.078 |
| Deuteranopia (no green cones) | #28251A | 0.071 |
| Tritanopia (no blue cones) | #450B15 | 0.018 |
| Achromatopsia (no color) | #222222 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F121B
#3F121B
oklch(25.9% 0.07 11.4)
- #002A29
#002A29
oklch(25.8% 0.044 192.3)
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 #3F121B, 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 0.042
- Mahogany #4A0100 ΔE 0.044
- Chocolate Brown #411900 ΔE 0.047
- Dark Plum #3F012C ΔE 0.053
- Dark Brown #341C02 ΔE 0.058
- Aubergine #3D0734 ΔE 0.058
- Eggplant #380835 ΔE 0.063
Use #3F121B 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.