#B31B71
Closest named color: Medium Violet Red (#C71585). oklch(51.3% 0.196 352.8), rgb(179, 27, 113).
Aa
White text reads best on this color (6.34:1).
About this color
#B31B71 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.196 and its hue 353°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.049 away. White text reads best on it, at 6.34:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.196) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.31:1 |
| White text | 6.34:1 |
Values
| HEX | #B31B71 |
| RGB | rgb(179, 27, 113) |
| HSL | hsl(326, 74%, 40%) |
| OKLCH | oklch(51.3% 0.196 352.8) |
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 #B31B71 | 6.34:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #B31B71 | 3.31:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #B31B71 text on white | 6.34:1 | AA | Lc 79.8 | Fine for body text |
| #B31B71 text on black | 3.31:1 | AA large text | Lc -22.0 | 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
#F6CBDC
oklch(88.4% 0.053 352.5)
-
Step 300
300
#F1A7C6
oklch(80.8% 0.095 352.6)
-
Step 400
400
#E775A9
oklch(70.8% 0.152 353)
-
Step 500
500
#DC4A94
oklch(63.2% 0.194 352.8)
-
Step 600
600
#C7217E
oklch(55.6% 0.211 352.9)
-
Step 700
700 (this color)
#B31B71
oklch(51.3% 0.196 352.8)
-
Step 800
800
#8B1357
oklch(42.7% 0.163 352.6)
-
Step 900
900
#701B48
oklch(37.7% 0.126 352.5)
-
Step 950
950
#42122A
oklch(27% 0.08 352.8)
#B31B71 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) | #3D4E73 | 0.222 |
| Deuteranopia (no green cones) | #68696E | 0.195 |
| Tritanopia (no blue cones) | #C10045 | 0.071 |
| Achromatopsia (no color) | #5F5F5F | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31B71
#B31B71
oklch(51.3% 0.196 352.8)
- #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 #B31B71, closest first.
No curated palette has a color within ΔE 0.04 of #B31B71.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.049
- Red Violet #9E0168 ΔE 0.053
- Violet Red #A50055 ΔE 0.053
- Deep Magenta #A0025C ΔE 0.054
- Raspberry #B00149 ΔE 0.060
- Dark Fuchsia #9D0759 ΔE 0.060
- Light Burgundy #A8415B ΔE 0.073
- Warm Purple #952E8F ΔE 0.078
Use #B31B71 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.