#550510
Closest named color: Mahogany (#4A0100). oklch(28.9% 0.11 21.6), rgb(85, 5, 16).
Aa
White text reads best on this color (14.83:1).
About this color
#550510 is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.110 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Mahogany (#4A0100), ΔE 0.035 away. White text reads best on it, at 14.83:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Mahogany (#4A0100) |
| Black text | 1.41:1 |
| White text | 14.83:1 |
Values
| HEX | #550510 |
| RGB | rgb(85, 5, 16) |
| HSL | hsl(352, 89%, 18%) |
| OKLCH | oklch(28.9% 0.11 21.6) |
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 #550510 | 14.83:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #550510 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #550510 text on white | 14.83:1 | AAA | Lc 100.4 | Preferred for body text |
| #550510 text on black | 1.41:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E0
oklch(93.6% 0.032 22.5)
-
Step 200
200
#FFCAC7
oklch(88.5% 0.061 22.1)
-
Step 300
300
#FFA4A1
oklch(80.8% 0.109 21.8)
-
Step 400
400
#FF676B
oklch(70.7% 0.186 21.6)
-
Step 500
500
#FF003C
oklch(63.2% 0.254 21.8)
-
Step 600
600
#D70032
oklch(55.5% 0.224 21.5)
-
Step 700
700
#B60028
oklch(49% 0.197 21.7)
-
Step 800
800
#970020
oklch(42.7% 0.172 21.5)
-
Step 900
900
#7F0019
oklch(37.7% 0.152 21.7)
-
Step 950
950 (this color)
#550510
oklch(28.9% 0.11 21.6)
#550510 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) | #201D10 | 0.121 |
| Deuteranopia (no green cones) | #332D0D | 0.110 |
| Tritanopia (no blue cones) | #5E000A | 0.021 |
| Achromatopsia (no color) | #282828 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #550510
#550510
oklch(28.9% 0.11 21.6)
- #003235
#003235
oklch(28.9% 0.049 201.2)
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 #550510, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mahogany #4A0100 ΔE 0.035
- Burgundy #610023 ΔE 0.040
- Claret #680018 ΔE 0.045
- Deep Brown #410200 ΔE 0.055
- Chocolate Brown #411900 ΔE 0.060
- Reddy Brown #6E1005 ΔE 0.066
- Dark Maroon #3C0008 ΔE 0.066
- Blood #770001 ΔE 0.080
Use #550510 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.