#B31561
Closest named color: Raspberry (#B00149). oklch(50.4% 0.194 359.5), rgb(179, 21, 97).
Aa
White text reads best on this color (6.56:1).
About this color
#B31561 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.194 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.036 away. White text reads best on it, at 6.56:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.194) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #B31561 |
| RGB | rgb(179, 21, 97) |
| HSL | hsl(331, 79%, 39%) |
| OKLCH | oklch(50.4% 0.194 359.5) |
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 #B31561 | 6.56:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #B31561 | 3.19:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #B31561 text on white | 6.56:1 | AA | Lc 80.6 | Fine for body text |
| #B31561 text on black | 3.19:1 | AA large text | Lc -21.2 | 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
#F8CBD8
oklch(88.5% 0.053 359)
-
Step 300
300
#F3A7BF
oklch(80.8% 0.094 358.9)
-
Step 400
400
#E9759E
oklch(70.7% 0.149 359.2)
-
Step 500
500
#DF4A86
oklch(63.1% 0.191 359.4)
-
Step 600
600
#CA206F
oklch(55.6% 0.208 359.6)
-
Step 700
700 (this color)
#B31561
oklch(50.4% 0.194 359.5)
-
Step 800
800
#8E134C
oklch(42.8% 0.16 359.8)
-
Step 900
900
#721A3F
oklch(37.7% 0.125 359.8)
-
Step 950
950
#431225
oklch(27% 0.078 359.8)
#B31561 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) | #404A63 | 0.221 |
| Deuteranopia (no green cones) | #6A675E | 0.195 |
| Tritanopia (no blue cones) | #C3003B | 0.064 |
| Achromatopsia (no color) | #5D5D5D | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31561
#B31561
oklch(50.4% 0.194 359.5)
- #007566
#007566
oklch(50.4% 0.092 179.8)
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 #B31561, closest first.
No curated palette has a color within ΔE 0.04 of #B31561.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.036
- Violet Red #A50055 ΔE 0.037
- Deep Magenta #A0025C ΔE 0.046
- Dark Fuchsia #9D0759 ΔE 0.051
- Red Violet #9E0168 ΔE 0.054
- Rose Red #BE013C ΔE 0.058
- Rouge #AB1239 ΔE 0.060
- Ruby #CA0147 ΔE 0.061
Use #B31561 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.