#3F0301
Closest named color: Deep Brown (#410200). oklch(23.5% 0.091 30), rgb(63, 3, 1).
Aa
White text reads best on this color (17.14:1).
About this color
#3F0301 is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.091 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.005 away. White text reads best on it, at 17.14:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.22:1 |
| White text | 17.14:1 |
Values
| HEX | #3F0301 |
| RGB | rgb(63, 3, 1) |
| HSL | hsl(2, 97%, 13%) |
| OKLCH | oklch(23.5% 0.091 30) |
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 #3F0301 | 17.14:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #3F0301 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #3F0301 text on white | 17.14:1 | AAA | Lc 103.1 | Preferred for body text |
| #3F0301 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FECBC2
oklch(88.4% 0.06 29.9)
-
Step 300
300
#FEA697
oklch(80.8% 0.107 30.1)
-
Step 400
400
#F9705D
oklch(70.7% 0.172 30)
-
Step 500
500
#F23C2A
oklch(63.2% 0.22 30)
-
Step 600
600
#D71000
oklch(55.6% 0.223 30)
-
Step 700
700
#B60C00
oklch(49.1% 0.197 30)
-
Step 800
800
#970800
oklch(42.8% 0.171 30)
-
Step 900
900
#7C0F06
oklch(37.6% 0.143 30)
-
Step 950
950 (this color)
#3F0301
oklch(23.5% 0.091 30)
#3F0301 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) | #171300 | 0.099 |
| Deuteranopia (no green cones) | #262000 | 0.087 |
| Tritanopia (no blue cones) | #470003 | 0.020 |
| Achromatopsia (no color) | #1B1B1B | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F0301
#3F0301
oklch(23.5% 0.091 30)
- #002329
#002329
oklch(23.5% 0.041 211.3)
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 #3F0301, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.005
- Dark Maroon #3C0008 ΔE 0.018
- Mahogany #4A0100 ΔE 0.027
- Chocolate Brown #411900 ΔE 0.048
- Dark Brown #341C02 ΔE 0.059
- Dark Plum #3F012C ΔE 0.077
- Aubergine #3D0734 ΔE 0.088
- Very Dark Brown #1D0200 ΔE 0.092
Use #3F0301 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.