#B51D6F
Closest named color: Medium Violet Red (#C71585). oklch(51.7% 0.195 354.3), rgb(181, 29, 111).
Aa
White text reads best on this color (6.23:1).
About this color
#B51D6F is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.195 and its hue 354°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.048 away. White text reads best on it, at 6.23:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.37:1 |
| White text | 6.23:1 |
Values
| HEX | #B51D6F |
| RGB | rgb(181, 29, 111) |
| HSL | hsl(328, 72%, 41%) |
| OKLCH | oklch(51.7% 0.195 354.3) |
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 #B51D6F | 6.23:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #B51D6F | 3.37:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #B51D6F text on white | 6.23:1 | AA | Lc 79.4 | Fine for body text |
| #B51D6F text on black | 3.37:1 | AA large text | Lc -22.4 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#FAE3EB
oklch(93.7% 0.027 354.5)
-
Step 200
200
#F7CBDB
oklch(88.5% 0.054 354.4)
-
Step 300
300
#F2A7C4
oklch(80.9% 0.095 354.6)
-
Step 400
400
#E775A6
oklch(70.7% 0.15 354.5)
-
Step 500
500
#DC4A91
oklch(63.1% 0.193 354.1)
-
Step 600
600
#C8217B
oklch(55.7% 0.21 354.4)
-
Step 700
700 (this color)
#B51D6F
oklch(51.7% 0.195 354.3)
-
Step 800
800
#8C1354
oklch(42.7% 0.162 354.6)
-
Step 900
900
#701B46
oklch(37.7% 0.125 354)
-
Step 950
950
#421229
oklch(27% 0.079 354)
#B51D6F 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) | #404F71 | 0.221 |
| Deuteranopia (no green cones) | #6A6A6C | 0.194 |
| Tritanopia (no blue cones) | #C40045 | 0.068 |
| Achromatopsia (no color) | #616161 | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51D6F
#B51D6F
oklch(51.7% 0.195 354.3)
- #007A64
#007A64
oklch(51.7% 0.098 174.3)
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 #B51D6F, closest first.
No curated palette has a color within ΔE 0.04 of #B51D6F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.048
- Violet Red #A50055 ΔE 0.054
- Deep Magenta #A0025C ΔE 0.057
- Raspberry #B00149 ΔE 0.057
- Red Violet #9E0168 ΔE 0.058
- Dark Fuchsia #9D0759 ΔE 0.063
- Light Burgundy #A8415B ΔE 0.070
- Ruby #CA0147 ΔE 0.073
Use #B51D6F 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.