#3F1017
Closest named color: Deep Brown (#410200). oklch(25.5% 0.073 15.2), rgb(63, 16, 23).
Aa
White text reads best on this color (16.18:1).
About this color
#3F1017 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.073 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.035 away. White text reads best on it, at 16.18:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.29:1 |
| White text | 16.18:1 |
Values
| HEX | #3F1017 |
| RGB | rgb(63, 16, 23) |
| HSL | hsl(351, 59%, 15%) |
| OKLCH | oklch(25.5% 0.073 15.2) |
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 #3F1017 | 16.18:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #3F1017 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #3F1017 text on white | 16.18:1 | AAA | Lc 102.7 | Preferred for body text |
| #3F1017 text on black | 1.29:1 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FAE4E4
oklch(93.7% 0.024 17.6)
-
Step 200
200
#F7CDCF
oklch(88.5% 0.048 14.9)
-
Step 300
300
#F3AAAE
oklch(80.9% 0.086 15.5)
-
Step 400
400
#EA7984
oklch(70.7% 0.14 15.2)
-
Step 500
500
#DF5166
oklch(63.1% 0.177 15)
-
Step 600
600
#CB2D4D
oklch(55.7% 0.193 15.3)
-
Step 700
700
#AF1C3E
oklch(49.1% 0.179 15.2)
-
Step 800
800
#8E1C33
oklch(42.7% 0.148 15.5)
-
Step 900
900
#721F2D
oklch(37.7% 0.116 15)
-
Step 950
950 (this color)
#3F1017
oklch(25.5% 0.073 15.2)
#3F1017 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) | #1B1A17 | 0.081 |
| Deuteranopia (no green cones) | #282416 | 0.073 |
| Tritanopia (no blue cones) | #460713 | 0.019 |
| Achromatopsia (no color) | #212121 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F1017
#3F1017
oklch(25.5% 0.073 15.2)
- #002929
#002929
oklch(25.4% 0.043 194.8)
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 #3F1017, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.035
- Dark Maroon #3C0008 ΔE 0.035
- Mahogany #4A0100 ΔE 0.038
- Chocolate Brown #411900 ΔE 0.045
- Dark Plum #3F012C ΔE 0.055
- Dark Brown #341C02 ΔE 0.056
- Aubergine #3D0734 ΔE 0.063
- Eggplant #380835 ΔE 0.067
Use #3F1017 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.