#4D181C
Closest named color: Mahogany (#4A0100). oklch(29.5% 0.08 19.1), rgb(77, 24, 28).
Aa
White text reads best on this color (14.35:1).
About this color
#4D181C is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.080 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.047 away. White text reads best on it, at 14.35:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.46:1 |
| White text | 14.35:1 |
Values
| HEX | #4D181C |
| RGB | rgb(77, 24, 28) |
| HSL | hsl(355, 52%, 20%) |
| OKLCH | oklch(29.5% 0.08 19.1) |
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 #4D181C | 14.35:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #4D181C | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #4D181C text on white | 14.35:1 | AAA | Lc 100.6 | Preferred for body text |
| #4D181C text on black | 1.46:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FACCCB
oklch(88.5% 0.052 19.6)
-
Step 300
300
#F8A8A8
oklch(80.9% 0.095 19.3)
-
Step 400
400
#F0757A
oklch(70.7% 0.152 19.2)
-
Step 500
500
#E74959
oklch(63.2% 0.194 19)
-
Step 600
600
#D21B3E
oklch(55.6% 0.211 19.2)
-
Step 700
700
#B50230
oklch(49% 0.196 19.2)
-
Step 800
800
#930F29
oklch(42.7% 0.162 18.9)
-
Step 900
900
#761925
oklch(37.6% 0.126 19.1)
-
Step 950
950 (this color)
#4D181C
oklch(29.5% 0.08 19.1)
#4D181C 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) | #25231C | 0.087 |
| Deuteranopia (no green cones) | #322E1B | 0.080 |
| Tritanopia (no blue cones) | #550E1A | 0.022 |
| Achromatopsia (no color) | #2A2A2A | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D181C
#4D181C
oklch(29.5% 0.08 19.1)
- #003436
#003436
oklch(29.5% 0.05 198.9)
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 #4D181C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.047
- Chocolate Brown #411900 ΔE 0.048
- Burgundy #610023 ΔE 0.053
- Claret #680018 ΔE 0.061
- Deep Brown #410200 ΔE 0.061
- Dark Maroon #3C0008 ΔE 0.070
- Dark Brown #341C02 ΔE 0.070
- Reddy Brown #6E1005 ΔE 0.075
Use #4D181C 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.