#B31D63
Closest named color: Raspberry (#B00149). oklch(50.9% 0.189 359.2), rgb(179, 29, 99).
Aa
White text reads best on this color (6.41:1).
About this color
#B31D63 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.189 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.039 away. White text reads best on it, at 6.41:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #B31D63 |
| RGB | rgb(179, 29, 99) |
| HSL | hsl(332, 72%, 41%) |
| OKLCH | oklch(50.9% 0.189 359.2) |
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 #B31D63 | 6.41:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #B31D63 | 3.27:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #B31D63 text on white | 6.41:1 | AA | Lc 80.2 | Fine for body text |
| #B31D63 text on black | 3.27:1 | AA large text | Lc -21.6 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FAE3E9
oklch(93.6% 0.026 359.9)
-
Step 200
200
#F7CCD8
oklch(88.6% 0.051 359.6)
-
Step 300
300
#F2A8BF
oklch(80.9% 0.091 359.1)
-
Step 400
400
#E8769E
oklch(70.7% 0.147 359.3)
-
Step 500
500
#DD4C86
oklch(63.1% 0.187 359.3)
-
Step 600
600
#C82570
oklch(55.5% 0.203 359.2)
-
Step 700
700 (this color)
#B31D63
oklch(50.9% 0.189 359.2)
-
Step 800
800
#8C164D
oklch(42.7% 0.157 358.9)
-
Step 900
900
#711C40
oklch(37.7% 0.122 359.1)
-
Step 950
950
#431225
oklch(27% 0.078 359.8)
#B31D63 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) | #434D65 | 0.214 |
| Deuteranopia (no green cones) | #6B6960 | 0.192 |
| Tritanopia (no blue cones) | #C3003E | 0.061 |
| Achromatopsia (no color) | #5F5F5F | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31D63
#B31D63
oklch(50.9% 0.189 359.2)
- #007767
#007767
oklch(51% 0.093 179.1)
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 #B31D63, closest first.
No curated palette has a color within ΔE 0.04 of #B31D63.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.039
- Violet Red #A50055 ΔE 0.042
- Deep Magenta #A0025C ΔE 0.050
- Dark Fuchsia #9D0759 ΔE 0.055
- Red Violet #9E0168 ΔE 0.057
- Light Burgundy #A8415B ΔE 0.059
- Rose Red #BE013C ΔE 0.059
- Ruby #CA0147 ΔE 0.061
Use #B31D63 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.