#B43581
Closest named color: Medium Violet Red (#C71585). oklch(54.1% 0.179 348), rgb(180, 53, 129).
Aa
White text reads best on this color (5.57:1).
About this color
#B43581 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.179 and its hue 348°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.045 away. White text reads best on it, at 5.57:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #B43581 |
| RGB | rgb(180, 53, 129) |
| HSL | hsl(324, 55%, 46%) |
| OKLCH | oklch(54.1% 0.179 348) |
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 #B43581 | 5.57:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #B43581 | 3.76:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #B43581 text on white | 5.57:1 | AA | Lc 76.8 | Fine for body text |
| #B43581 text on black | 3.76:1 | AA large text | Lc -24.9 | 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
#F7E4ED
oklch(93.7% 0.024 347.2)
-
Step 200
200
#F1CEDE
oklch(88.6% 0.044 348.7)
-
Step 300
300
#E9ACCA
oklch(81% 0.081 348)
-
Step 400
400
#DB7DAF
oklch(70.7% 0.13 347.8)
-
Step 500
500
#CE599B
oklch(63.1% 0.165 347.9)
-
Step 600
600 (this color)
#B43581
oklch(54.1% 0.179 348)
-
Step 700
700
#9F2B71
oklch(49.1% 0.167 348)
-
Step 800
800
#81265C
oklch(42.7% 0.137 347.9)
-
Step 900
900
#68254C
oklch(37.7% 0.107 347.4)
-
Step 950
950
#3D162C
oklch(26.8% 0.068 347.7)
#B43581 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) | #465A83 | 0.199 |
| Deuteranopia (no green cones) | #6B707E | 0.176 |
| Tritanopia (no blue cones) | #C13056 | 0.071 |
| Achromatopsia (no color) | #686868 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B43581
#B43581
oklch(54.1% 0.179 348)
- #008362
#008362
oklch(54.2% 0.11 167.5)
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 #B43581, closest first.
No curated palette has a color within ΔE 0.04 of #B43581.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.045
- Dark Pink #CB416B ΔE 0.070
- Light Burgundy #A8415B ΔE 0.071
- Warm Purple #952E8F ΔE 0.073
- Light Plum #9D5783 ΔE 0.073
- Dark Rose #B5485D ΔE 0.075
- Deep Rose #C74767 ΔE 0.075
- Red Violet #9E0168 ΔE 0.080
Use #B43581 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.