#A155CD
Closest named color: Amethyst (#9B5FC0). oklch(59.2% 0.186 311.2), rgb(161, 85, 205).
Aa
Black text reads best on this color (4.69:1).
About this color
#A155CD is a medium-dark, vivid purple. In OKLCH its lightness is 59%, its chroma 0.186 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.032 away. Black text reads best on it, at 4.69:1.
| Hue family | Purples |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.186) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #A155CD |
| RGB | rgb(161, 85, 205) |
| HSL | hsl(278, 55%, 57%) |
| OKLCH | oklch(59.2% 0.186 311.2) |
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 #A155CD | 4.47:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #A155CD | 4.69:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #A155CD text on white | 4.47:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #A155CD text on black | 4.69:1 | AA | Lc -31.1 | Non-text elements, placeholder text |
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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F6
oklch(93.7% 0.023 310.7)
-
Step 200
200
#E3D1F0
oklch(88.5% 0.046 311.2)
-
Step 300
300
#D2B2E9
oklch(81% 0.083 310.8)
-
Step 400
400
#BC87DE
oklch(70.8% 0.135 311.3)
-
Step 500
500
#AB66D4
oklch(63.2% 0.171 311.4)
-
Step 600
600 (this color)
#A155CD
oklch(59.2% 0.186 311.2)
-
Step 700
700
#803AA7
oklch(49.1% 0.173 311.2)
-
Step 800
800
#683187
oklch(42.7% 0.143 311.3)
-
Step 900
900
#542C6C
oklch(37.6% 0.112 311)
-
Step 950
950
#311B3F
oklch(27% 0.069 310.8)
#A155CD 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) | #2C73D1 | 0.163 |
| Deuteranopia (no green cones) | #4B79CA | 0.144 |
| Tritanopia (no blue cones) | #9C6B89 | 0.128 |
| Achromatopsia (no color) | #777777 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A155CD
#A155CD
oklch(59.2% 0.186 311.2)
- #599000
#599000
oklch(59.2% 0.162 131.3)
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 #A155CD, closest first.
No curated palette has a color within ΔE 0.04 of #A155CD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.032
- Medium Orchid #BA55D3 ΔE 0.046
- Deep Lavender #8D5EB7 ΔE 0.053
- Lighter Purple #A55AF4 ΔE 0.059
- Purpley #8756E4 ΔE 0.059
- Purply #983FB2 ΔE 0.060
- Medium Purple #9370DB ΔE 0.063
- Dark Orchid #9932CC ΔE 0.065
Use #A155CD 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.