#550B33
Closest named color: Burgundy (#610023). oklch(30.4% 0.111 353.4), rgb(85, 11, 51).
Aa
White text reads best on this color (14.17:1).
About this color
#550B33 is a dark, moderately saturated red. In OKLCH its lightness is 30%, its chroma 0.111 and its hue 353°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.038 away. White text reads best on it, at 14.17:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.111) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.48:1 |
| White text | 14.17:1 |
Values
| HEX | #550B33 |
| RGB | rgb(85, 11, 51) |
| HSL | hsl(328, 77%, 19%) |
| OKLCH | oklch(30.4% 0.111 353.4) |
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 #550B33 | 14.17:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #550B33 | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #550B33 text on white | 14.17:1 | AAA | Lc 99.9 | Preferred for body text |
| #550B33 text on black | 1.48:1 | 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
#FFF1F6
oklch(97.1% 0.016 353.6)
-
Step 100
100
#FFE0EC
oklch(93.6% 0.037 352.5)
-
Step 200
200
#FFC7DD
oklch(88.5% 0.069 353.2)
-
Step 300
300
#FF9EC7
oklch(80.9% 0.125 353.4)
-
Step 400
400
#FE5BAB
oklch(70.8% 0.211 353.5)
-
Step 500
500
#F30096
oklch(63.2% 0.261 353.3)
-
Step 600
600
#CD007E
oklch(55.6% 0.229 353.3)
-
Step 700
700
#AE006A
oklch(49.2% 0.203 353.3)
-
Step 800
800
#900056
oklch(42.8% 0.176 353.8)
-
Step 900
900
#790048
oklch(37.7% 0.156 353.4)
-
Step 950
950 (this color)
#550B33
oklch(30.4% 0.111 353.4)
#550B33 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) | #1A2234 | 0.126 |
| Deuteranopia (no green cones) | #2F3031 | 0.112 |
| Tritanopia (no blue cones) | #5C031E | 0.039 |
| Achromatopsia (no color) | #2B2B2B | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #550B33
#550B33
oklch(30.4% 0.111 353.4)
- #00382C
#00382C
oklch(30.4% 0.058 173.2)
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 #550B33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.038
- Deep Violet #490648 ΔE 0.053
- Grape Purple #5D1451 ΔE 0.055
- Eggplant Purple #430541 ΔE 0.057
- Plum Purple #4E0550 ΔE 0.060
- Dark Plum #3F012C ΔE 0.060
- Aubergine #3D0734 ΔE 0.060
- Claret #680018 ΔE 0.062
Use #550B33 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.