#551B37
Closest named color: Burgundy (#610023). oklch(32.2% 0.092 353.5), rgb(85, 27, 55).
Aa
White text reads best on this color (13.13:1).
About this color
#551B37 is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.092 and its hue 354°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.046 away. White text reads best on it, at 13.13:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.59:1 |
| White text | 13.13:1 |
Values
| HEX | #551B37 |
| RGB | rgb(85, 27, 55) |
| HSL | hsl(331, 52%, 22%) |
| OKLCH | oklch(32.2% 0.092 353.5) |
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 #551B37 | 13.13:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #551B37 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #551B37 text on white | 13.13:1 | AAA | Lc 98.9 | Preferred for body text |
| #551B37 text on black | 1.59:1 | 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
#FEF2F6
oklch(97.2% 0.014 355)
-
Step 100
100
#FCE2EB
oklch(93.6% 0.031 354.7)
-
Step 200
200
#FAC9DC
oklch(88.4% 0.06 353.2)
-
Step 300
300
#F8A3C6
oklch(80.9% 0.109 353.5)
-
Step 400
400
#F06CA9
oklch(70.8% 0.174 353.6)
-
Step 500
500
#E63894
oklch(63.1% 0.222 353.4)
-
Step 600
600
#CD007D
oklch(55.5% 0.229 353.6)
-
Step 700
700
#AE0069
oklch(49.1% 0.203 353.8)
-
Step 800
800
#900056
oklch(42.8% 0.176 353.8)
-
Step 900
900
#760C47
oklch(37.7% 0.145 353.8)
-
Step 950
950 (this color)
#551B37
oklch(32.2% 0.092 353.5)
#551B37 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) | #242A38 | 0.101 |
| Deuteranopia (no green cones) | #343436 | 0.091 |
| Tritanopia (no blue cones) | #5C1726 | 0.032 |
| Achromatopsia (no color) | #303030 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551B37
#551B37
oklch(32.2% 0.092 353.5)
- #003D31
#003D31
oklch(32.1% 0.061 174.5)
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 #551B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.046
- Grape Purple #5D1451 ΔE 0.052
- Claret #680018 ΔE 0.062
- Deep Violet #490648 ΔE 0.065
- Merlot #730039 ΔE 0.067
- Plum Purple #4E0550 ΔE 0.068
- Eggplant Purple #430541 ΔE 0.070
- Aubergine #3D0734 ΔE 0.075
Use #551B37 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.