#B31C72
Closest named color: Medium Violet Red (#C71585). oklch(51.4% 0.196 352.4), rgb(179, 28, 114).
Aa
White text reads best on this color (6.31:1).
About this color
#B31C72 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.196 and its hue 352°. 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 6.31:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.196) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.32:1 |
| White text | 6.31:1 |
Values
| HEX | #B31C72 |
| RGB | rgb(179, 28, 114) |
| HSL | hsl(326, 73%, 41%) |
| OKLCH | oklch(51.4% 0.196 352.4) |
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 #B31C72 | 6.31:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #B31C72 | 3.32:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #B31C72 text on white | 6.31:1 | AA | Lc 79.8 | Fine for body text |
| #B31C72 text on black | 3.32:1 | AA large text | Lc -22.1 | 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 700.
-
Step 50
50
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#FAE3EC
oklch(93.7% 0.028 352)
-
Step 200
200
#F6CBDC
oklch(88.4% 0.053 352.5)
-
Step 300
300
#F1A7C7
oklch(80.8% 0.096 351.9)
-
Step 400
400
#E675AA
oklch(70.7% 0.151 352.2)
-
Step 500
500
#DB4A95
oklch(63% 0.194 352.2)
-
Step 600
600
#C6227F
oklch(55.5% 0.21 352.3)
-
Step 700
700 (this color)
#B31C72
oklch(51.4% 0.196 352.4)
-
Step 800
800
#8B1457
oklch(42.7% 0.162 352.7)
-
Step 900
900
#701B48
oklch(37.7% 0.126 352.5)
-
Step 950
950
#42122A
oklch(27% 0.08 352.8)
#B31C72 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) | #3D4F74 | 0.222 |
| Deuteranopia (no green cones) | #68696F | 0.194 |
| Tritanopia (no blue cones) | #C10146 | 0.071 |
| Achromatopsia (no color) | #606060 | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31C72
#B31C72
oklch(51.4% 0.196 352.4)
- #007961
#007961
oklch(51.3% 0.099 172.5)
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 #B31C72, closest first.
No curated palette has a color within ΔE 0.04 of #B31C72.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.048
- Red Violet #9E0168 ΔE 0.053
- Violet Red #A50055 ΔE 0.054
- Deep Magenta #A0025C ΔE 0.055
- Dark Fuchsia #9D0759 ΔE 0.061
- Raspberry #B00149 ΔE 0.061
- Light Burgundy #A8415B ΔE 0.074
- Warm Purple #952E8F ΔE 0.077
Use #B31C72 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.