#B551CA
Closest named color: Medium Orchid (#BA55D3). oklch(60.9% 0.197 320.4), rgb(181, 81, 202).
Aa
Black text reads best on this color (4.99:1).
About this color
#B551CA is a medium-dark, vivid purple. In OKLCH its lightness is 61%, its chroma 0.197 and its hue 320°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Orchid (#BA55D3), ΔE 0.018 away. Black text reads best on it, at 4.99:1.
| Hue family | Purples |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.197) |
| Temperature | in between |
| Nearest name | Medium Orchid (#BA55D3) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #B551CA |
| RGB | rgb(181, 81, 202) |
| HSL | hsl(290, 53%, 55%) |
| OKLCH | oklch(60.9% 0.197 320.4) |
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 #B551CA | 4.20:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #B551CA | 4.99:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #B551CA text on white | 4.20:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #B551CA text on black | 4.99:1 | AA | Lc -33.3 | 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 500.
-
Step 50
50
#FAF3FB
oklch(97.2% 0.013 321.9)
-
Step 100
100
#F3E4F6
oklch(93.6% 0.029 320.6)
-
Step 200
200
#EACEEF
oklch(88.5% 0.054 321.1)
-
Step 300
300
#DDACE7
oklch(80.8% 0.097 320.6)
-
Step 400
400
#CB7EDB
oklch(70.7% 0.154 320.5)
-
Step 500
500 (this color)
#B551CA
oklch(60.9% 0.197 320.4)
-
Step 600
600
#A737BE
oklch(55.5% 0.214 320.2)
-
Step 700
700
#8F28A4
oklch(49.1% 0.199 320.2)
-
Step 800
800
#752385
oklch(42.7% 0.166 320.6)
-
Step 900
900
#5E246B
oklch(37.7% 0.129 319.9)
-
Step 950
950
#37163E
oklch(26.9% 0.081 320.3)
#B551CA 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) | #3574CE | 0.191 |
| Deuteranopia (no green cones) | #5C7FC7 | 0.165 |
| Tritanopia (no blue cones) | #B66486 | 0.122 |
| Achromatopsia (no color) | #7B7B7B | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B551CA
#B551CA
oklch(60.9% 0.197 320.4)
- #2B9D01
#2B9D01
oklch(60.9% 0.197 140.4)
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 #B551CA, closest first.
No curated palette has a color within ΔE 0.04 of #B551CA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Orchid #BA55D3 ΔE 0.018
- Pinky Purple #C94CBE ΔE 0.042
- Purpley Pink #C83CB9 ΔE 0.051
- Amethyst #9B5FC0 ΔE 0.055
- Lighter Purple #A55AF4 ΔE 0.071
- Purply #983FB2 ΔE 0.075
- Deep Lavender #8D5EB7 ΔE 0.080
- Soft Purple #A66FB5 ΔE 0.080
Use #B551CA 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.