#4B181F
Closest named color: Mahogany (#4A0100). oklch(29.2% 0.077 15.1), rgb(75, 24, 31).
Aa
White text reads best on this color (14.48:1).
About this color
#4B181F is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.077 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.049 away. White text reads best on it, at 14.48:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.44:1 |
| White text | 14.48:1 |
Values
| HEX | #4B181F |
| RGB | rgb(75, 24, 31) |
| HSL | hsl(352, 52%, 19%) |
| OKLCH | oklch(29.2% 0.077 15.1) |
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 #4B181F | 14.48:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #4B181F | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #4B181F text on white | 14.48:1 | AAA | Lc 100.8 | Preferred for body text |
| #4B181F text on black | 1.44:1 | 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
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FBE3E4
oklch(93.6% 0.026 14.7)
-
Step 200
200
#F9CCCE
oklch(88.5% 0.051 15.2)
-
Step 300
300
#F6A8AD
oklch(80.8% 0.092 15.1)
-
Step 400
400
#ED7683
oklch(70.6% 0.147 14.8)
-
Step 500
500
#E34B64
oklch(63% 0.187 14.8)
-
Step 600
600
#CF224B
oklch(55.6% 0.204 15.1)
-
Step 700
700
#B20F3C
oklch(49% 0.189 15.1)
-
Step 800
800
#911432
oklch(42.7% 0.157 15)
-
Step 900
900
#741B2C
oklch(37.6% 0.122 14.7)
-
Step 950
950 (this color)
#4B181F
oklch(29.2% 0.077 15.1)
#4B181F 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) | #24231F | 0.085 |
| Deuteranopia (no green cones) | #312D1E | 0.077 |
| Tritanopia (no blue cones) | #52101B | 0.019 |
| Achromatopsia (no color) | #292929 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B181F
#4B181F
oklch(29.2% 0.077 15.1)
- #003333
#003333
oklch(29.1% 0.05 194.8)
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 #4B181F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.049
- Chocolate Brown #411900 ΔE 0.050
- Burgundy #610023 ΔE 0.055
- Deep Brown #410200 ΔE 0.061
- Claret #680018 ΔE 0.065
- Dark Maroon #3C0008 ΔE 0.068
- Dark Plum #3F012C ΔE 0.070
- Dark Brown #341C02 ΔE 0.070
Use #4B181F 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.