#B81C34
Closest named color: Lipstick Red (#C0022F). oklch(50.6% 0.188 20.3), rgb(184, 28, 52).
Aa
White text reads best on this color (6.45:1).
About this color
#B81C34 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.188 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Lipstick Red (#C0022F), ΔE 0.018 away. White text reads best on it, at 6.45:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #B81C34 |
| RGB | rgb(184, 28, 52) |
| HSL | hsl(351, 74%, 42%) |
| OKLCH | oklch(50.6% 0.188 20.3) |
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 #B81C34 | 6.45:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #B81C34 | 3.25:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #B81C34 text on white | 6.45:1 | AA | Lc 80.2 | Fine for body text |
| #B81C34 text on black | 3.25:1 | AA large text | Lc -21.6 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E2
oklch(93.5% 0.026 20.5)
-
Step 200
200
#F9CDCB
oklch(88.6% 0.05 21.2)
-
Step 300
300
#F6A9A8
oklch(80.9% 0.091 20.1)
-
Step 400
400
#ED787A
oklch(70.7% 0.145 20.4)
-
Step 500
500
#E44D58
oklch(63.1% 0.186 20.2)
-
Step 600
600
#CF263E
oklch(55.6% 0.202 20.2)
-
Step 700
700 (this color)
#B81C34
oklch(50.6% 0.188 20.3)
-
Step 800
800
#911728
oklch(42.7% 0.155 20.4)
-
Step 900
900
#741D25
oklch(37.6% 0.12 20.2)
-
Step 950
950
#451316
oklch(27.1% 0.077 20.4)
#B81C34 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) | #4F4933 | 0.208 |
| Deuteranopia (no green cones) | #756A2F | 0.189 |
| Tritanopia (no blue cones) | #CB0027 | 0.038 |
| Achromatopsia (no color) | #5E5E5E | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B81C34
#B81C34
oklch(50.6% 0.188 20.3)
- #007379
#007379
oklch(50.5% 0.086 201.2)
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 #B81C34, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lipstick Red #C0022F ΔE 0.018
- Rose Red #BE013C ΔE 0.022
- Firebrick #B22222 ΔE 0.024
- Scarlet #BE0119 ΔE 0.026
- Rouge #AB1239 ΔE 0.033
- Rufous #AE2012 ΔE 0.038
- Brown #A52A2A ΔE 0.041
- Ruby #CA0147 ΔE 0.045
Use #B81C34 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.