#A551AB
Closest named color: Amethyst (#9B5FC0). oklch(57.2% 0.16 324.8), rgb(165, 81, 171).
Aa
White text reads best on this color (4.81:1).
About this color
#A551AB is a medium-dark, vivid purple. In OKLCH its lightness is 57%, its chroma 0.160 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.043 away. White text reads best on it, at 4.81:1.
| Hue family | Purples |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #A551AB |
| RGB | rgb(165, 81, 171) |
| HSL | hsl(296, 36%, 49%) |
| OKLCH | oklch(57.2% 0.16 324.8) |
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 #A551AB | 4.81:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #A551AB | 4.36:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #A551AB text on white | 4.81:1 | AA | Lc 72.9 | Content text, not long reading |
| #A551AB text on black | 4.36:1 | AA large text | Lc -28.8 | Dividers and decoration only |
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 600.
-
Step 50
50
#F9F3F9
oklch(97% 0.01 325.7)
-
Step 100
100
#F1E5F2
oklch(93.5% 0.022 323.4)
-
Step 200
200
#E7D1E8
oklch(88.6% 0.039 324.6)
-
Step 300
300
#D9B1DB
oklch(80.9% 0.073 324.7)
-
Step 400
400
#C587C8
oklch(70.7% 0.115 325.1)
-
Step 500
500
#B567BA
oklch(63.1% 0.147 324.9)
-
Step 600
600 (this color)
#A551AB
oklch(57.2% 0.16 324.8)
-
Step 700
700
#893D8E
oklch(49.2% 0.148 325.1)
-
Step 800
800
#6F3373
oklch(42.7% 0.122 325)
-
Step 900
900
#5A2D5D
oklch(37.6% 0.096 324.9)
-
Step 950
950
#351B37
oklch(27% 0.061 324.5)
#A551AB 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) | #466BAE | 0.154 |
| Deuteranopia (no green cones) | #6076A8 | 0.137 |
| Tritanopia (no blue cones) | #A85C76 | 0.094 |
| Achromatopsia (no color) | #727272 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A551AB
#A551AB
oklch(57.2% 0.16 324.8)
- #278F34
#278F34
oklch(57.2% 0.159 144.9)
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 #A551AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.043
- Purply #983FB2 ΔE 0.050
- Deep Lavender #8D5EB7 ΔE 0.051
- Soft Purple #A66FB5 ΔE 0.068
- Light Plum #9D5783 ΔE 0.069
- Dark Lilac #9C6DA5 ΔE 0.069
- Deep Lilac #966EBD ΔE 0.069
- Medium Orchid #BA55D3 ΔE 0.071
Use #A551AB 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.