#3F180C
Closest named color: Chocolate Brown (#411900). oklch(26.6% 0.065 37.7), rgb(63, 24, 12).
Aa
White text reads best on this color (15.58:1).
About this color
#3F180C is a dark, muted red. In OKLCH its lightness is 27%, its chroma 0.065 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.016 away. White text reads best on it, at 15.58:1.
| Hue family | Reds |
| Lightness | dark (27%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.34:1 |
| White text | 15.58:1 |
Values
| HEX | #3F180C |
| RGB | rgb(63, 24, 12) |
| HSL | hsl(14, 68%, 15%) |
| OKLCH | oklch(26.6% 0.065 37.7) |
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 #3F180C | 15.58:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #3F180C | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #3F180C text on white | 15.58:1 | AAA | Lc 102.2 | Preferred for body text |
| #3F180C text on black | 1.34:1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5DF
oklch(93.5% 0.022 38.3)
-
Step 200
200
#F3D0C5
oklch(88.4% 0.042 38.2)
-
Step 300
300
#EDB09D
oklch(80.9% 0.077 38)
-
Step 400
400
#E18467
oklch(70.7% 0.122 38.1)
-
Step 500
500
#D6613D
oklch(63.1% 0.156 37.6)
-
Step 600
600
#C24317
oklch(55.6% 0.171 37.5)
-
Step 700
700
#A73406
oklch(49.2% 0.158 37.8)
-
Step 800
800
#872C0C
oklch(42.6% 0.131 37.6)
-
Step 900
900
#6D2914
oklch(37.7% 0.102 37.4)
-
Step 950
950 (this color)
#3F180C
oklch(26.6% 0.065 37.7)
#3F180C 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) | #231E0B | 0.062 |
| Deuteranopia (no green cones) | #2C270B | 0.059 |
| Tritanopia (no blue cones) | #461015 | 0.029 |
| Achromatopsia (no color) | #242424 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F180C
#3F180C
oklch(26.6% 0.065 37.7)
- #002B35
#002B35
oklch(26.7% 0.048 217.8)
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 #3F180C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.016
- Dark Brown #341C02 ΔE 0.032
- Deep Brown #410200 ΔE 0.042
- Mahogany #4A0100 ΔE 0.042
- Dark Maroon #3C0008 ΔE 0.053
- Jet #212529 ΔE 0.073
- Dark Plum #3F012C ΔE 0.085
- Dark #1B2431 ΔE 0.088
Use #3F180C 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.