#B51442
Closest named color: Rose Red (#BE013C). oklch(49.9% 0.19 13.5), rgb(181, 20, 66).
Aa
White text reads best on this color (6.68:1).
About this color
#B51442 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.190 and its hue 14°. Its hue sits on the warm side of the wheel. The nearest named color is Rose Red (#BE013C), ΔE 0.019 away. White text reads best on it, at 6.68:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.190) |
| Temperature | warm |
| Nearest name | Rose Red (#BE013C) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #B51442 |
| RGB | rgb(181, 20, 66) |
| HSL | hsl(343, 80%, 39%) |
| OKLCH | oklch(49.9% 0.19 13.5) |
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 #B51442 | 6.68:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #B51442 | 3.14:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #B51442 text on white | 6.68:1 | AA | Lc 81.0 | Fine for body text |
| #B51442 text on black | 3.14:1 | AA large text | Lc -20.9 | 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
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FBE3E5
oklch(93.6% 0.026 11.9)
-
Step 200
200
#F9CCCF
oklch(88.5% 0.051 13.7)
-
Step 300
300
#F6A8AF
oklch(80.9% 0.092 13.4)
-
Step 400
400
#ED7685
oklch(70.7% 0.147 13.7)
-
Step 500
500
#E34B67
oklch(63% 0.188 13.6)
-
Step 600
600
#CE224F
oklch(55.5% 0.203 13.4)
-
Step 700
700 (this color)
#B51442
oklch(49.9% 0.19 13.5)
-
Step 800
800
#911435
oklch(42.8% 0.157 13.4)
-
Step 900
900
#741B2E
oklch(37.6% 0.122 13.3)
-
Step 950
950
#45121B
oklch(27.1% 0.078 13.6)
#B51442 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) | #494742 | 0.213 |
| Deuteranopia (no green cones) | #70673E | 0.193 |
| Tritanopia (no blue cones) | #C7002A | 0.045 |
| Achromatopsia (no color) | #5C5C5C | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B51442
#B51442
oklch(49.9% 0.19 13.5)
- #007271
#007271
oklch(49.9% 0.085 193.7)
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 #B51442, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rose Red #BE013C ΔE 0.019
- Raspberry #B00149 ΔE 0.023
- Rouge #AB1239 ΔE 0.024
- Lipstick Red #C0022F ΔE 0.031
- Ruby #CA0147 ΔE 0.042
- Firebrick #B22222 ΔE 0.044
- Scarlet #BE0119 ΔE 0.046
- Brown #A52A2A ΔE 0.051
Use #B51442 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.