#B31D54
Closest named color: Raspberry (#B00149). oklch(50.5% 0.185 6.1), rgb(179, 29, 84).
Aa
White text reads best on this color (6.52:1).
About this color
#B31D54 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.185 and its hue 6°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.023 away. White text reads best on it, at 6.52:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.185) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.22:1 |
| White text | 6.52:1 |
Values
| HEX | #B31D54 |
| RGB | rgb(179, 29, 84) |
| HSL | hsl(338, 72%, 41%) |
| OKLCH | oklch(50.5% 0.185 6.1) |
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 #B31D54 | 6.52:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #B31D54 | 3.22:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #B31D54 text on white | 6.52:1 | AA | Lc 80.6 | Fine for body text |
| #B31D54 text on black | 3.22:1 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F7CCD4
oklch(88.4% 0.05 5.6)
-
Step 300
300
#F3A9B8
oklch(81% 0.089 5.9)
-
Step 400
400
#E97793
oklch(70.7% 0.143 5.9)
-
Step 500
500
#DF4E78
oklch(63.2% 0.182 6.3)
-
Step 600
600
#CA2761
oklch(55.6% 0.199 6.1)
-
Step 700
700 (this color)
#B31D54
oklch(50.5% 0.185 6.1)
-
Step 800
800
#8D1842
oklch(42.6% 0.153 5.9)
-
Step 900
900
#721D38
oklch(37.7% 0.12 5.9)
-
Step 950
950
#431321
oklch(27% 0.075 5.7)
#B31D54 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) | #474B55 | 0.209 |
| Deuteranopia (no green cones) | #6E6850 | 0.189 |
| Tritanopia (no blue cones) | #C40037 | 0.050 |
| Achromatopsia (no color) | #5E5E5E | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B31D54
#B31D54
oklch(50.5% 0.185 6.1)
- #00756C
#00756C
oklch(50.6% 0.089 185.5)
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 #B31D54, closest first.
No curated palette has a color within ΔE 0.04 of #B31D54.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.023
- Rose Red #BE013C ΔE 0.038
- Rouge #AB1239 ΔE 0.041
- Violet Red #A50055 ΔE 0.042
- Ruby #CA0147 ΔE 0.048
- Light Burgundy #A8415B ΔE 0.051
- Lipstick Red #C0022F ΔE 0.053
- Deep Magenta #A0025C ΔE 0.055
Use #B31D54 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.