#B51FB7
Closest named color: Purpley Pink (#C83CB9). oklch(55.4% 0.237 327.6), rgb(181, 31, 183).
Aa
White text reads best on this color (5.46:1).
About this color
#B51FB7 is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.237 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purpley Pink (#C83CB9), ΔE 0.057 away. White text reads best on it, at 5.46:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.237) |
| Temperature | in between |
| Nearest name | Purpley Pink (#C83CB9) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #B51FB7 |
| RGB | rgb(181, 31, 183) |
| HSL | hsl(299, 71%, 42%) |
| OKLCH | oklch(55.4% 0.237 327.6) |
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 #B51FB7 | 5.46:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #B51FB7 | 3.84:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #B51FB7 text on white | 5.46:1 | AA | Lc 75.6 | Fine for body text |
| #B51FB7 text on black | 3.84:1 | AA large text | Lc -26.1 | 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
#FBF2FA
oklch(97% 0.014 329.1)
-
Step 100
100
#F6E3F5
oklch(93.6% 0.031 327.4)
-
Step 200
200
#EFCCEE
oklch(88.5% 0.059 327)
-
Step 300
300
#E6A8E4
oklch(80.9% 0.107 327.6)
-
Step 400
400
#D776D6
oklch(70.7% 0.17 327.6)
-
Step 500
500
#CB4ACB
oklch(63.1% 0.219 327.8)
-
Step 600
600 (this color)
#B51FB7
oklch(55.4% 0.237 327.6)
-
Step 700
700
#9C0C9E
oklch(49.1% 0.22 327.6)
-
Step 800
800
#7F1380
oklch(42.7% 0.182 327.8)
-
Step 900
900
#661B67
oklch(37.7% 0.142 327.4)
-
Step 950
950
#3C123C
oklch(27% 0.089 327.7)
#B51FB7 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) | #005DBB | 0.252 |
| Deuteranopia (no green cones) | #4D70B4 | 0.215 |
| Tritanopia (no blue cones) | #BB3D6E | 0.132 |
| Achromatopsia (no color) | #696969 | 0.239 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51FB7
#B51FB7
oklch(55.4% 0.237 327.6)
- #008B34
#008B34
oklch(55.5% 0.162 147.6)
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 #B51FB7, closest first.
No curated palette has a color within ΔE 0.04 of #B51FB7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purpley Pink #C83CB9 ΔE 0.057
- Purply #983FB2 ΔE 0.064
- Dark Orchid #9932CC ΔE 0.067
- Vibrant Purple #AD03DE ΔE 0.067
- Pinky Purple #C94CBE ΔE 0.079
- Medium Orchid #BA55D3 ΔE 0.086
- Purple Pink #D725DE ΔE 0.086
- Warm Purple #952E8F ΔE 0.086
Use #B51FB7 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.