#A155CB
Closest named color: Amethyst (#9B5FC0). oklch(59% 0.184 311.8), rgb(161, 85, 203).
Aa
Black text reads best on this color (4.67:1).
About this color
#A155CB is a medium-dark, vivid purple. In OKLCH its lightness is 59%, its chroma 0.184 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.030 away. Black text reads best on it, at 4.67:1.
| Hue family | Purples |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 4.67:1 |
| White text | 4.48:1 |
Values
| HEX | #A155CB |
| RGB | rgb(161, 85, 203) |
| HSL | hsl(279, 53%, 56%) |
| OKLCH | oklch(59% 0.184 311.8) |
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 #A155CB | 4.48:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #A155CB | 4.67:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #A155CB text on white | 4.48:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #A155CB text on black | 4.67:1 | AA | Lc -31.0 | 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
#D3B2E8
oklch(81% 0.083 312.1)
-
Step 400
400
#BC87DC
oklch(70.7% 0.132 312)
-
Step 500
500
#AB66D3
oklch(63.1% 0.17 311.7)
-
Step 600
600 (this color)
#A155CB
oklch(59% 0.184 311.8)
-
Step 700
700
#803AA5
oklch(49% 0.171 311.9)
-
Step 800
800
#683186
oklch(42.6% 0.142 311.7)
-
Step 900
900
#552D6B
oklch(37.8% 0.109 312.1)
-
Step 950
950
#321B3F
oklch(27.1% 0.07 312.1)
#A155CB 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) | #2E73CF | 0.162 |
| Deuteranopia (no green cones) | #4C78C8 | 0.143 |
| Tritanopia (no blue cones) | #9C6A88 | 0.126 |
| Achromatopsia (no color) | #777777 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A155CB
#A155CB
oklch(59% 0.184 311.8)
- #579000
#579000
oklch(59.1% 0.164 131.8)
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 #A155CB, closest first.
No curated palette has a color within ΔE 0.04 of #A155CB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.030
- Medium Orchid #BA55D3 ΔE 0.047
- Deep Lavender #8D5EB7 ΔE 0.051
- Purply #983FB2 ΔE 0.058
- Purpley #8756E4 ΔE 0.061
- Lighter Purple #A55AF4 ΔE 0.062
- Medium Purple #9370DB ΔE 0.063
- Deep Lilac #966EBD ΔE 0.065
Use #A155CB 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.