#B51BBF
Closest named color: Vibrant Purple (#AD03DE). oklch(55.7% 0.245 325.3), rgb(181, 27, 191).
Aa
White text reads best on this color (5.42:1).
About this color
#B51BBF is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.245 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Vibrant Purple (#AD03DE), ΔE 0.054 away. White text reads best on it, at 5.42:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.245) |
| Temperature | in between |
| Nearest name | Vibrant Purple (#AD03DE) |
| Black text | 3.87:1 |
| White text | 5.42:1 |
Values
| HEX | #B51BBF |
| RGB | rgb(181, 27, 191) |
| HSL | hsl(296, 75%, 43%) |
| OKLCH | oklch(55.7% 0.245 325.3) |
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 #B51BBF | 5.42:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #B51BBF | 3.87:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #B51BBF text on white | 5.42:1 | AA | Lc 75.2 | Fine for body text |
| #B51BBF text on black | 3.87:1 | AA large text | Lc -26.5 | 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
#FBF2FB
oklch(97.1% 0.015 325.7)
-
Step 100
100
#F5E3F6
oklch(93.6% 0.032 324.2)
-
Step 200
200
#EFCCF0
oklch(88.6% 0.062 325.2)
-
Step 300
300
#E5A8E8
oklch(80.9% 0.11 325)
-
Step 400
400
#D675DC
oklch(70.7% 0.176 325.1)
-
Step 500
500
#C948D2
oklch(63% 0.226 325.1)
-
Step 600
600 (this color)
#B51BBF
oklch(55.7% 0.245 325.3)
-
Step 700
700
#9B02A5
oklch(49.1% 0.228 325)
-
Step 800
800
#7E0F85
oklch(42.7% 0.188 325.4)
-
Step 900
900
#66196B
oklch(37.7% 0.148 325.3)
-
Step 950
950
#3C113F
oklch(27% 0.094 325.1)
#B51BBF 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) | #005FC3 | 0.251 |
| Deuteranopia (no green cones) | #4670BB | 0.222 |
| Tritanopia (no blue cones) | #B94072 | 0.141 |
| Achromatopsia (no color) | #6A6A6A | 0.248 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51BBF
#B51BBF
oklch(55.7% 0.245 325.3)
- #008C26
#008C26
oklch(55.6% 0.174 145.3)
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 #B51BBF, closest first.
No curated palette has a color within ΔE 0.04 of #B51BBF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vibrant Purple #AD03DE ΔE 0.054
- Purpley Pink #C83CB9 ΔE 0.061
- Dark Orchid #9932CC ΔE 0.062
- Purply #983FB2 ΔE 0.068
- Purple Pink #D725DE ΔE 0.080
- Dark Violet #9400D3 ΔE 0.081
- Pinky Purple #C94CBE ΔE 0.082
- Medium Orchid #BA55D3 ΔE 0.085
Use #B51BBF 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.