#B31F53
Closest named color: Raspberry (#B00149). oklch(50.6% 0.183 6.8), rgb(179, 31, 83).
Aa
White text reads best on this color (6.48:1).
About this color
#B31F53 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.183 and its hue 7°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.024 away. White text reads best on it, at 6.48:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #B31F53 |
| RGB | rgb(179, 31, 83) |
| HSL | hsl(339, 70%, 41%) |
| OKLCH | oklch(50.6% 0.183 6.8) |
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 #B31F53 | 6.48:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #B31F53 | 3.23:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #B31F53 text on white | 6.48:1 | AA | Lc 80.5 | Fine for body text |
| #B31F53 text on black | 3.23:1 | AA large text | Lc -21.3 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F7CCD3
oklch(88.4% 0.049 7.1)
-
Step 300
300
#F3A9B7
oklch(80.9% 0.089 6.8)
-
Step 400
400
#E97892
oklch(70.8% 0.141 6.8)
-
Step 500
500
#DF4E77
oklch(63.1% 0.182 6.8)
-
Step 600
600
#CA2960
oklch(55.7% 0.197 6.8)
-
Step 700
700 (this color)
#B31F53
oklch(50.6% 0.183 6.8)
-
Step 800
800
#8D1941
oklch(42.7% 0.152 6.6)
-
Step 900
900
#721E37
oklch(37.8% 0.118 7)
-
Step 950
950
#431320
oklch(27% 0.075 7)
#B31F53 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) | #484B54 | 0.207 |
| Deuteranopia (no green cones) | #6F684F | 0.186 |
| Tritanopia (no blue cones) | #C40037 | 0.049 |
| Achromatopsia (no color) | #5E5E5E | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31F53
#B31F53
oklch(50.6% 0.183 6.8)
- #00756D
#00756D
oklch(50.6% 0.089 186.5)
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 #B31F53, closest first.
No curated palette has a color within ΔE 0.04 of #B31F53.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.024
- Rose Red #BE013C ΔE 0.037
- Rouge #AB1239 ΔE 0.040
- Violet Red #A50055 ΔE 0.044
- Ruby #CA0147 ΔE 0.048
- Light Burgundy #A8415B ΔE 0.049
- Lipstick Red #C0022F ΔE 0.051
- Deep Magenta #A0025C ΔE 0.057
Use #B31F53 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.