#B43781
Closest named color: Medium Violet Red (#C71585). oklch(54.3% 0.177 348.2), rgb(180, 55, 129).
Aa
White text reads best on this color (5.52:1).
About this color
#B43781 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.177 and its hue 348°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.046 away. White text reads best on it, at 5.52:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.80:1 |
| White text | 5.52:1 |
Values
| HEX | #B43781 |
| RGB | rgb(180, 55, 129) |
| HSL | hsl(324, 53%, 46%) |
| OKLCH | oklch(54.3% 0.177 348.2) |
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 #B43781 | 5.52:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #B43781 | 3.80:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #B43781 text on white | 5.52:1 | AA | Lc 76.6 | Fine for body text |
| #B43781 text on black | 3.80:1 | AA large text | Lc -25.2 | 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
#FBF3F7
oklch(97.1% 0.01 345.4)
-
Step 100
100
#F6E4EC
oklch(93.6% 0.022 348.8)
-
Step 200
200
#F1CEDE
oklch(88.6% 0.044 348.7)
-
Step 300
300
#E8ACC9
oklch(80.9% 0.079 348.5)
-
Step 400
400
#DA7EAE
oklch(70.7% 0.127 348.3)
-
Step 500
500
#CD5A9A
oklch(63.1% 0.162 348.2)
-
Step 600
600 (this color)
#B43781
oklch(54.3% 0.177 348.2)
-
Step 700
700
#9F2C71
oklch(49.2% 0.165 348)
-
Step 800
800
#81275C
oklch(42.8% 0.136 348.1)
-
Step 900
900
#68254B
oklch(37.7% 0.106 348.3)
-
Step 950
950
#3D172C
oklch(27% 0.066 348.1)
#B43781 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) | #485B83 | 0.196 |
| Deuteranopia (no green cones) | #6C717E | 0.174 |
| Tritanopia (no blue cones) | #C13257 | 0.069 |
| Achromatopsia (no color) | #696969 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B43781
#B43781
oklch(54.3% 0.177 348.2)
- #008363
#008363
oklch(54.2% 0.109 168.2)
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 #B43781, closest first.
No curated palette has a color within ΔE 0.04 of #B43781.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.046
- Dark Pink #CB416B ΔE 0.068
- Light Burgundy #A8415B ΔE 0.069
- Light Plum #9D5783 ΔE 0.071
- Dark Rose #B5485D ΔE 0.073
- Deep Rose #C74767 ΔE 0.073
- Warm Purple #952E8F ΔE 0.075
- Dark Hot Pink #D90166 ΔE 0.082
Use #B43781 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.