#B81130
Closest named color: Lipstick Red (#C0022F). oklch(50% 0.193 20.5), rgb(184, 17, 48).
Aa
White text reads best on this color (6.64:1).
About this color
#B81130 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.193 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Lipstick Red (#C0022F), ΔE 0.016 away. White text reads best on it, at 6.64:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.193) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.16:1 |
| White text | 6.64:1 |
Values
| HEX | #B81130 |
| RGB | rgb(184, 17, 48) |
| HSL | hsl(349, 83%, 39%) |
| OKLCH | oklch(50% 0.193 20.5) |
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 #B81130 | 6.64:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #B81130 | 3.16:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #B81130 text on white | 6.64:1 | AA | Lc 80.7 | Fine for body text |
| #B81130 text on black | 3.16:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FACCCB
oklch(88.5% 0.052 19.6)
-
Step 300
300
#F7A9A7
oklch(80.9% 0.093 20.9)
-
Step 400
400
#EF7678
oklch(70.7% 0.149 20.6)
-
Step 500
500
#E64A56
oklch(63.1% 0.192 20.3)
-
Step 600
600
#D11F3B
oklch(55.5% 0.208 20.5)
-
Step 700
700 (this color)
#B81130
oklch(50% 0.193 20.5)
-
Step 800
800
#931226
oklch(42.8% 0.16 20.7)
-
Step 900
900
#761B24
oklch(37.8% 0.125 20.4)
-
Step 950
950
#451215
oklch(26.9% 0.078 20.8)
#B81130 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) | #4C472F | 0.216 |
| Deuteranopia (no green cones) | #74682A | 0.194 |
| Tritanopia (no blue cones) | #CB0021 | 0.040 |
| Achromatopsia (no color) | #5C5C5C | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B81130
#B81130
oklch(50% 0.193 20.5)
- #007277
#007277
oklch(50.2% 0.085 200.1)
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 #B81130, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lipstick Red #C0022F ΔE 0.016
- Rose Red #BE013C ΔE 0.021
- Scarlet #BE0119 ΔE 0.023
- Firebrick #B22222 ΔE 0.025
- Rouge #AB1239 ΔE 0.030
- Rufous #AE2012 ΔE 0.037
- Brown #A52A2A ΔE 0.042
- Raspberry #B00149 ΔE 0.044
Use #B81130 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.