#551757
Closest named color: Grape Purple (#5D1451). oklch(33.5% 0.123 326.6), rgb(85, 23, 87).
Aa
White text reads best on this color (12.75:1).
About this color
#551757 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.123 and its hue 327°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.021 away. White text reads best on it, at 12.75:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.64:1 |
| White text | 12.75:1 |
Values
| HEX | #551757 |
| RGB | rgb(85, 23, 87) |
| HSL | hsl(298, 58%, 22%) |
| OKLCH | oklch(33.5% 0.123 326.6) |
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 #551757 | 12.75:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #551757 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #551757 text on white | 12.75:1 | AAA | Lc 98.1 | Preferred for body text |
| #551757 text on black | 1.64:1 | 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 900.
-
Step 50
50
#FAF3FA
oklch(97.2% 0.012 325.7)
-
Step 100
100
#F4E4F3
oklch(93.6% 0.026 327.7)
-
Step 200
200
#ECCEEB
oklch(88.5% 0.051 327)
-
Step 300
300
#E1ACE0
oklch(80.9% 0.092 327)
-
Step 400
400
#D07DD1
oklch(70.7% 0.149 326.6)
-
Step 500
500
#C258C4
oklch(63.2% 0.188 326.8)
-
Step 600
600
#AD37B1
oklch(55.6% 0.206 326.5)
-
Step 700
700
#942898
oklch(49.1% 0.191 326.5)
-
Step 800
800
#78247B
oklch(42.6% 0.157 326.4)
-
Step 900
900 (this color)
#551757
oklch(33.5% 0.123 326.6)
-
Step 950
950
#39163A
oklch(26.9% 0.078 326.4)
#551757 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) | #0B2D59 | 0.129 |
| Deuteranopia (no green cones) | #263555 | 0.109 |
| Tritanopia (no blue cones) | #572135 | 0.070 |
| Achromatopsia (no color) | #323232 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551757
#551757
oklch(33.5% 0.123 326.6)
- #004312
#004312
oklch(33.3% 0.1 146.6)
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 #551757, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.021
- Plum Purple #4E0550 ΔE 0.034
- Deep Violet #490648 ΔE 0.046
- Royal Purple #4B006E ΔE 0.059
- Rich Purple #720058 ΔE 0.064
- Eggplant Purple #430541 ΔE 0.064
- Velvet #750851 ΔE 0.071
- Merlot #730039 ΔE 0.085
Use #551757 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.