#4B1821
Closest named color: Mahogany (#4A0100). oklch(29.2% 0.078 12.6), rgb(75, 24, 33).
Aa
White text reads best on this color (14.46:1).
About this color
#4B1821 is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.078 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.051 away. White text reads best on it, at 14.46:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.45:1 |
| White text | 14.46:1 |
Values
| HEX | #4B1821 |
| RGB | rgb(75, 24, 33) |
| HSL | hsl(349, 52%, 19%) |
| OKLCH | oklch(29.2% 0.078 12.6) |
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 #4B1821 | 14.46:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #4B1821 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #4B1821 text on white | 14.46:1 | AAA | Lc 100.8 | Preferred for body text |
| #4B1821 text on black | 1.45:1 | 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
#FBE3E5
oklch(93.6% 0.026 11.9)
-
Step 200
200
#F9CCD0
oklch(88.5% 0.051 12.1)
-
Step 300
300
#F6A8B0
oklch(80.9% 0.093 12.6)
-
Step 400
400
#ED7687
oklch(70.7% 0.147 12.6)
-
Step 500
500
#E34B69
oklch(63.1% 0.188 12.7)
-
Step 600
600
#CE2251
oklch(55.6% 0.204 12.7)
-
Step 700
700
#B20E42
oklch(49.1% 0.19 12.5)
-
Step 800
800
#901436
oklch(42.6% 0.157 12.7)
-
Step 900
900
#741B2F
oklch(37.7% 0.123 12.5)
-
Step 950
950 (this color)
#4B1821
oklch(29.2% 0.078 12.6)
#4B1821 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) | #232321 | 0.086 |
| Deuteranopia (no green cones) | #312D20 | 0.077 |
| Tritanopia (no blue cones) | #52101B | 0.020 |
| Achromatopsia (no color) | #292929 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B1821
#4B1821
oklch(29.2% 0.078 12.6)
- #003433
#003433
oklch(29.4% 0.05 192.7)
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 #4B1821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.051
- Chocolate Brown #411900 ΔE 0.053
- Burgundy #610023 ΔE 0.054
- Deep Brown #410200 ΔE 0.063
- Claret #680018 ΔE 0.065
- Dark Plum #3F012C ΔE 0.068
- Dark Maroon #3C0008 ΔE 0.069
- Aubergine #3D0734 ΔE 0.071
Use #4B1821 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.