#55100B
Closest named color: Mahogany (#4A0100). oklch(29.7% 0.101 28.9), rgb(85, 16, 11).
Aa
White text reads best on this color (14.33:1).
About this color
#55100B is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.101 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.040 away. White text reads best on it, at 14.33:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.101) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.46:1 |
| White text | 14.33:1 |
Values
| HEX | #55100B |
| RGB | rgb(85, 16, 11) |
| HSL | hsl(4, 77%, 19%) |
| OKLCH | oklch(29.7% 0.101 28.9) |
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 #55100B | 14.33:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #55100B | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #55100B text on white | 14.33:1 | AAA | Lc 100.2 | Preferred for body text |
| #55100B 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE2DE
oklch(93.5% 0.033 27.1)
-
Step 200
200
#FFCBC2
oklch(88.5% 0.061 29.7)
-
Step 300
300
#FFA698
oklch(81% 0.108 29.4)
-
Step 400
400
#FF6A59
oklch(70.7% 0.185 29.1)
-
Step 500
500
#FB211B
oklch(63% 0.245 28.8)
-
Step 600
600
#D90004
oklch(55.6% 0.228 28.9)
-
Step 700
700
#B80003
oklch(49.2% 0.201 28.9)
-
Step 800
800
#980002
oklch(42.7% 0.175 28.9)
-
Step 900
900
#800001
oklch(37.7% 0.154 29)
-
Step 950
950 (this color)
#55100B
oklch(29.7% 0.101 28.9)
#55100B 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) | #25200A | 0.108 |
| Deuteranopia (no green cones) | #363008 | 0.100 |
| Tritanopia (no blue cones) | #5E0010 | 0.027 |
| Achromatopsia (no color) | #2A2A2A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55100B
#55100B
oklch(29.7% 0.101 28.9)
- #00343B
#00343B
oklch(29.8% 0.051 209.2)
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 #55100B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.040
- Claret #680018 ΔE 0.047
- Burgundy #610023 ΔE 0.048
- Chocolate Brown #411900 ΔE 0.050
- Reddy Brown #6E1005 ΔE 0.058
- Deep Brown #410200 ΔE 0.060
- Dark Maroon #3C0008 ΔE 0.074
- Blood #770001 ΔE 0.075
Use #55100B 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.