#B51568
Closest named color: Violet Red (#A50055). oklch(51% 0.198 356.9), rgb(181, 21, 104).
Aa
White text reads best on this color (6.41:1).
About this color
#B51568 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.198 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Violet Red (#A50055), ΔE 0.045 away. White text reads best on it, at 6.41:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Violet Red (#A50055) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #B51568 |
| RGB | rgb(181, 21, 104) |
| HSL | hsl(329, 79%, 40%) |
| OKLCH | oklch(51% 0.198 356.9) |
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 #B51568 | 6.41:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #B51568 | 3.27:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #B51568 text on white | 6.41:1 | AA | Lc 80.0 | Fine for body text |
| #B51568 text on black | 3.27:1 | AA large text | Lc -21.8 | 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 700.
-
Step 50
50
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FAE3EA
oklch(93.6% 0.027 357.2)
-
Step 200
200
#F8CBDA
oklch(88.5% 0.054 356.3)
-
Step 300
300
#F3A7C2
oklch(80.9% 0.095 356.5)
-
Step 400
400
#E974A2
oklch(70.7% 0.152 356.9)
-
Step 500
500
#DF488B
oklch(63.1% 0.195 357)
-
Step 600
600
#CA1C75
oklch(55.6% 0.213 356.9)
-
Step 700
700 (this color)
#B51568
oklch(51% 0.198 356.9)
-
Step 800
800
#8D1050
oklch(42.6% 0.163 356.9)
-
Step 900
900
#721943
oklch(37.7% 0.128 356.6)
-
Step 950
950
#431127
oklch(27% 0.081 356.8)
#B51568 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) | #3F4C6A | 0.225 |
| Deuteranopia (no green cones) | #6A6965 | 0.199 |
| Tritanopia (no blue cones) | #C4003F | 0.068 |
| Achromatopsia (no color) | #5F5F5F | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51568
#B51568
oklch(51% 0.198 356.9)
- #007865
#007865
oklch(51.2% 0.095 176.5)
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 #B51568, closest first.
No curated palette has a color within ΔE 0.04 of #B51568.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Red #A50055 ΔE 0.045
- Raspberry #B00149 ΔE 0.047
- Deep Magenta #A0025C ΔE 0.051
- Red Violet #9E0168 ΔE 0.055
- Medium Violet Red #C71585 ΔE 0.056
- Dark Fuchsia #9D0759 ΔE 0.057
- Ruby #CA0147 ΔE 0.066
- Rose Red #BE013C ΔE 0.067
Use #B51568 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.