#3F170B
Closest named color: Chocolate Brown (#411900). oklch(26.4% 0.066 37.3), rgb(63, 23, 11).
Aa
White text reads best on this color (15.68:1).
About this color
#3F170B is a dark, muted red. In OKLCH its lightness is 26%, its chroma 0.066 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.017 away. White text reads best on it, at 15.68:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.33:1 |
| White text | 15.68:1 |
Values
| HEX | #3F170B |
| RGB | rgb(63, 23, 11) |
| HSL | hsl(14, 70%, 15%) |
| OKLCH | oklch(26.4% 0.066 37.3) |
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 #3F170B | 15.68:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #3F170B | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #3F170B text on white | 15.68:1 | AAA | Lc 102.3 | Preferred for body text |
| #3F170B text on black | 1.33:1 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F8E5DF
oklch(93.5% 0.022 38.3)
-
Step 200
200
#F4D0C5
oklch(88.5% 0.043 37.7)
-
Step 300
300
#EEAF9D
oklch(80.8% 0.079 36.6)
-
Step 400
400
#E38366
oklch(70.8% 0.126 37.6)
-
Step 500
500
#D85F3B
oklch(63.1% 0.161 37.2)
-
Step 600
600
#C34114
oklch(55.5% 0.174 37.2)
-
Step 700
700
#A83102
oklch(49% 0.162 37.2)
-
Step 800
800
#892B0A
oklch(42.8% 0.134 37.3)
-
Step 900
900
#6E2813
oklch(37.7% 0.105 37)
-
Step 950
950 (this color)
#3F170B
oklch(26.4% 0.066 37.3)
#3F170B 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) | #221E0A | 0.065 |
| Deuteranopia (no green cones) | #2C270A | 0.061 |
| Tritanopia (no blue cones) | #460E14 | 0.030 |
| Achromatopsia (no color) | #232323 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F170B
#3F170B
oklch(26.4% 0.066 37.3)
- #002A34
#002A34
oklch(26.3% 0.047 218.2)
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 #3F170B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.017
- Dark Brown #341C02 ΔE 0.032
- Deep Brown #410200 ΔE 0.039
- Mahogany #4A0100 ΔE 0.040
- Dark Maroon #3C0008 ΔE 0.051
- Jet #212529 ΔE 0.075
- Dark Plum #3F012C ΔE 0.084
- Aubergine #3D0734 ΔE 0.089
Use #3F170B 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.