#B51C58
Closest named color: Raspberry (#B00149). oklch(50.9% 0.188 4.6), rgb(181, 28, 88).
Aa
White text reads best on this color (6.41:1).
About this color
#B51C58 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.188 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.027 away. White text reads best on it, at 6.41:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #B51C58 |
| RGB | rgb(181, 28, 88) |
| HSL | hsl(336, 73%, 41%) |
| OKLCH | oklch(50.9% 0.188 4.6) |
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 #B51C58 | 6.41:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #B51C58 | 3.27:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #B51C58 text on white | 6.41:1 | AA | Lc 80.2 | Fine for body text |
| #B51C58 text on black | 3.27:1 | AA large text | Lc -21.7 | 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
#F8CCD5
oklch(88.6% 0.051 4.4)
-
Step 300
300
#F4A8B9
oklch(80.9% 0.092 4.6)
-
Step 400
400
#EA7695
oklch(70.7% 0.146 4.6)
-
Step 500
500
#DF4C7B
oklch(63% 0.186 4.6)
-
Step 600
600
#CB2464
oklch(55.6% 0.203 4.7)
-
Step 700
700 (this color)
#B51C58
oklch(50.9% 0.188 4.6)
-
Step 800
800
#8E1644
oklch(42.7% 0.156 4.7)
-
Step 900
900
#721C39
oklch(37.7% 0.121 4.8)
-
Step 950
950
#431222
oklch(26.9% 0.077 3.8)
#B51C58 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) | #474C59 | 0.213 |
| Deuteranopia (no green cones) | #6F6954 | 0.191 |
| Tritanopia (no blue cones) | #C60038 | 0.054 |
| Achromatopsia (no color) | #5F5F5F | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51C58
#B51C58
oklch(50.9% 0.188 4.6)
- #00766C
#00766C
oklch(50.9% 0.09 184.6)
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 #B51C58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.027
- Rose Red #BE013C ΔE 0.041
- Violet Red #A50055 ΔE 0.044
- Ruby #CA0147 ΔE 0.047
- Rouge #AB1239 ΔE 0.048
- Light Burgundy #A8415B ΔE 0.054
- Deep Magenta #A0025C ΔE 0.056
- Lipstick Red #C0022F ΔE 0.057
Use #B51C58 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.