#4B101C
Closest named color: Mahogany (#4A0100). oklch(28% 0.088 13.3), rgb(75, 16, 28).
Aa
White text reads best on this color (15.10:1).
About this color
#4B101C is a dark, moderately saturated red. In OKLCH its lightness is 28%, its chroma 0.088 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.039 away. White text reads best on it, at 15.10:1.
| Hue family | Reds |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.088) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.39:1 |
| White text | 15.10:1 |
Values
| HEX | #4B101C |
| RGB | rgb(75, 16, 28) |
| HSL | hsl(348, 65%, 18%) |
| OKLCH | oklch(28% 0.088 13.3) |
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 #4B101C | 15.10:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #4B101C | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #4B101C text on white | 15.10:1 | AAA | Lc 101.3 | Preferred for body text |
| #4B101C text on black | 1.39:1 | 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
#FDE2E4
oklch(93.5% 0.03 12.6)
-
Step 200
200
#FDCACE
oklch(88.5% 0.058 13)
-
Step 300
300
#FCA4AD
oklch(80.8% 0.105 13)
-
Step 400
400
#F66E82
oklch(70.7% 0.167 13.3)
-
Step 500
500
#ED3A63
oklch(63% 0.214 13.2)
-
Step 600
600
#D5004C
oklch(55.6% 0.222 13.3)
-
Step 700
700
#B4003F
oklch(49% 0.196 13.2)
-
Step 800
800
#950033
oklch(42.7% 0.17 13.1)
-
Step 900
900
#7A0E2B
oklch(37.7% 0.14 13.4)
-
Step 950
950 (this color)
#4B101C
oklch(28% 0.088 13.3)
#4B101C 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) | #1F1E1C | 0.098 |
| Deuteranopia (no green cones) | #2E2B1A | 0.091 |
| Tritanopia (no blue cones) | #530315 | 0.022 |
| Achromatopsia (no color) | #262626 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B101C
#4B101C
oklch(28% 0.088 13.3)
- #003030
#003030
oklch(28% 0.048 194.8)
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 #4B101C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.039
- Deep Brown #410200 ΔE 0.051
- Burgundy #610023 ΔE 0.052
- Chocolate Brown #411900 ΔE 0.053
- Dark Maroon #3C0008 ΔE 0.056
- Dark Plum #3F012C ΔE 0.060
- Claret #680018 ΔE 0.065
- Aubergine #3D0734 ΔE 0.066
Use #4B101C 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.