#B51F59
Closest named color: Raspberry (#B00149). oklch(51.1% 0.186 4.5), rgb(181, 31, 89).
Aa
White text reads best on this color (6.35:1).
About this color
#B51F59 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.186 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.030 away. White text reads best on it, at 6.35:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.186) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #B51F59 |
| RGB | rgb(181, 31, 89) |
| HSL | hsl(337, 71%, 42%) |
| OKLCH | oklch(51.1% 0.186 4.5) |
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 #B51F59 | 6.35:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #B51F59 | 3.30:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #B51F59 text on white | 6.35:1 | AA | Lc 80.0 | Fine for body text |
| #B51F59 text on black | 3.30:1 | AA large text | Lc -21.9 | 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
#FAE3E8
oklch(93.6% 0.026 2.8)
-
Step 200
200
#F7CCD5
oklch(88.5% 0.05 4.1)
-
Step 300
300
#F3A8B9
oklch(80.8% 0.091 4.4)
-
Step 400
400
#E97795
oklch(70.7% 0.143 4.7)
-
Step 500
500
#DF4D7C
oklch(63.2% 0.185 4.3)
-
Step 600
600
#CA2665
oklch(55.6% 0.201 4.3)
-
Step 700
700 (this color)
#B51F59
oklch(51.1% 0.186 4.5)
-
Step 800
800
#8D1744
oklch(42.6% 0.154 4.6)
-
Step 900
900
#721D3A
oklch(37.8% 0.12 4.3)
-
Step 950
950
#431322
oklch(27.1% 0.075 4.4)
#B51F59 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) | #484D5A | 0.210 |
| Deuteranopia (no green cones) | #6F6A55 | 0.190 |
| Tritanopia (no blue cones) | #C5003A | 0.051 |
| Achromatopsia (no color) | #5F5F5F | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51F59
#B51F59
oklch(51.1% 0.186 4.5)
- #00776D
#00776D
oklch(51.2% 0.09 184.7)
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 #B51F59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.030
- Rose Red #BE013C ΔE 0.042
- Violet Red #A50055 ΔE 0.046
- Ruby #CA0147 ΔE 0.048
- Rouge #AB1239 ΔE 0.049
- Light Burgundy #A8415B ΔE 0.051
- Deep Magenta #A0025C ΔE 0.057
- Lipstick Red #C0022F ΔE 0.058
Use #B51F59 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.