#3F191B
Closest named color: Chocolate Brown (#411900). oklch(27.1% 0.059 18.7), rgb(63, 25, 27).
Aa
White text reads best on this color (15.37:1).
About this color
#3F191B is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.059 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.037 away. White text reads best on it, at 15.37:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.36:1 |
| White text | 15.37:1 |
Values
| HEX | #3F191B |
| RGB | rgb(63, 25, 27) |
| HSL | hsl(357, 43%, 17%) |
| OKLCH | oklch(27.1% 0.059 18.7) |
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 #3F191B | 15.37:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #3F191B | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #3F191B text on white | 15.37:1 | AAA | Lc 102.0 | Preferred for body text |
| #3F191B text on black | 1.36:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E4
oklch(93.6% 0.02 21.4)
-
Step 200
200
#F2CFCF
oklch(88.4% 0.039 17.9)
-
Step 300
300
#EBAFAF
oklch(80.9% 0.07 18.7)
-
Step 400
400
#DE8385
oklch(70.8% 0.112 18.9)
-
Step 500
500
#D26067
oklch(63.1% 0.144 18.4)
-
Step 600
600
#BD434E
oklch(55.5% 0.157 18.6)
-
Step 700
700
#A3343F
oklch(49.1% 0.146 18.7)
-
Step 800
800
#842C34
oklch(42.6% 0.121 18.6)
-
Step 900
900
#6B292E
oklch(37.8% 0.094 18.2)
-
Step 950
950 (this color)
#3F191B
oklch(27.1% 0.059 18.7)
#3F191B 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) | #21201B | 0.065 |
| Deuteranopia (no green cones) | #2B281A | 0.060 |
| Tritanopia (no blue cones) | #45141A | 0.016 |
| Achromatopsia (no color) | #252525 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F191B
#3F191B
oklch(27.1% 0.059 18.7)
- #002D2F
#002D2F
oklch(27% 0.046 199.4)
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 #3F191B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.037
- Dark Brown #341C02 ΔE 0.048
- Mahogany #4A0100 ΔE 0.049
- Deep Brown #410200 ΔE 0.050
- Dark Maroon #3C0008 ΔE 0.055
- Jet #212529 ΔE 0.067
- Dark Plum #3F012C ΔE 0.068
- Aubergine #3D0734 ΔE 0.070
Use #3F191B 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.