#B31C7F
Closest named color: Medium Violet Red (#C71585). oklch(51.9% 0.202 346.9), rgb(179, 28, 127).
Aa
White text reads best on this color (6.19:1).
About this color
#B31C7F is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.202 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.040 away. White text reads best on it, at 6.19:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.202) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.38:1 |
| White text | 6.19:1 |
Values
| HEX | #B31C7F |
| RGB | rgb(179, 28, 127) |
| HSL | hsl(321, 73%, 41%) |
| OKLCH | oklch(51.9% 0.202 346.9) |
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 #B31C7F | 6.19:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #B31C7F | 3.38:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #B31C7F text on white | 6.19:1 | AA | Lc 79.2 | Fine for body text |
| #B31C7F text on black | 3.38:1 | AA large text | Lc -22.6 | 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
#FDF2F7
oklch(97.1% 0.013 347.9)
-
Step 100
100
#F9E3ED
oklch(93.6% 0.027 348.3)
-
Step 200
200
#F5CBE0
oklch(88.4% 0.054 346.7)
-
Step 300
300
#F0A7CD
oklch(80.9% 0.098 347)
-
Step 400
400
#E574B4
oklch(70.8% 0.158 346.8)
-
Step 500
500
#D949A1
oklch(63.1% 0.2 346.7)
-
Step 600
600
#C41F8C
oklch(55.6% 0.217 346.6)
-
Step 700
700 (this color)
#B31C7F
oklch(51.9% 0.202 346.9)
-
Step 800
800
#891260
oklch(42.6% 0.167 347)
-
Step 900
900
#6F1A4F
oklch(37.8% 0.131 346.9)
-
Step 950
950
#41112E
oklch(26.9% 0.083 346.8)
#B31C7F 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) | #365181 | 0.229 |
| Deuteranopia (no green cones) | #646A7C | 0.197 |
| Tritanopia (no blue cones) | #C0144D | 0.083 |
| Achromatopsia (no color) | #616161 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31C7F
#B31C7F
oklch(51.9% 0.202 346.9)
- #007C5B
#007C5B
oklch(52% 0.107 166.4)
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 #B31C7F, closest first.
No curated palette has a color within ΔE 0.04 of #B31C7F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.040
- Red Violet #9E0168 ΔE 0.059
- Warm Purple #952E8F ΔE 0.066
- Deep Magenta #A0025C ΔE 0.068
- Violet Red #A50055 ΔE 0.071
- Dark Fuchsia #9D0759 ΔE 0.074
- Raspberry #B00149 ΔE 0.082
- Dark Hot Pink #D90166 ΔE 0.088
Use #B31C7F 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.