#4B0019
Closest named color: Mahogany (#4A0100). oklch(26.4% 0.106 9.9), rgb(75, 0, 25).
Aa
White text reads best on this color (15.99:1).
About this color
#4B0019 is a dark, moderately saturated red. In OKLCH its lightness is 26%, its chroma 0.106 and its hue 10°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.037 away. White text reads best on it, at 15.99:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.106) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.31:1 |
| White text | 15.99:1 |
Values
| HEX | #4B0019 |
| RGB | rgb(75, 0, 25) |
| HSL | hsl(340, 100%, 15%) |
| OKLCH | oklch(26.4% 0.106 9.9) |
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 #4B0019 | 15.99:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #4B0019 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #4B0019 text on white | 15.99:1 | AAA | Lc 101.7 | Preferred for body text |
| #4B0019 text on black | 1.31:1 | 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
#FFF2F3
oklch(97.2% 0.014 12)
-
Step 100
100
#FFE1E5
oklch(93.5% 0.033 8.6)
-
Step 200
200
#FFC9D0
oklch(88.5% 0.062 9.7)
-
Step 300
300
#FFA2B0
oklch(80.9% 0.111 10.1)
-
Step 400
400
#FF6385
oklch(70.7% 0.191 10.1)
-
Step 500
500
#FB0066
oklch(63.2% 0.253 10)
-
Step 600
600
#D40055
oklch(55.6% 0.222 10)
-
Step 700
700
#B30047
oklch(49% 0.196 9.8)
-
Step 800
800
#940039
oklch(42.6% 0.17 9.9)
-
Step 900
900
#7D002F
oklch(37.7% 0.151 9.9)
-
Step 950
950 (this color)
#4B0019
oklch(26.4% 0.106 9.9)
#4B0019 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) | #171819 | 0.120 |
| Deuteranopia (no green cones) | #2A2717 | 0.109 |
| Tritanopia (no blue cones) | #53000B | 0.030 |
| Achromatopsia (no color) | #222222 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B0019
#4B0019
oklch(26.4% 0.106 9.9)
- #002C2A
#002C2A
oklch(26.5% 0.046 190.1)
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 #4B0019, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.037
- Dark Maroon #3C0008 ΔE 0.045
- Deep Brown #410200 ΔE 0.045
- Dark Plum #3F012C ΔE 0.049
- Burgundy #610023 ΔE 0.055
- Aubergine #3D0734 ΔE 0.061
- Chocolate Brown #411900 ΔE 0.068
- Eggplant #380835 ΔE 0.070
Use #4B0019 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.