#B81333
Closest named color: Lipstick Red (#C0022F). oklch(50.2% 0.192 19.6), rgb(184, 19, 51).
Aa
White text reads best on this color (6.60:1).
About this color
#B81333 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.192 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 6.60:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.17:1 |
| White text | 6.60:1 |
Values
| HEX | #B81333 |
| RGB | rgb(184, 19, 51) |
| HSL | hsl(348, 81%, 40%) |
| OKLCH | oklch(50.2% 0.192 19.6) |
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 #B81333 | 6.60:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #B81333 | 3.17:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #B81333 text on white | 6.60:1 | AA | Lc 80.6 | Fine for body text |
| #B81333 text on black | 3.17:1 | 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
#F7A9A8
oklch(81% 0.092 20.1)
-
Step 400
400
#EF767A
oklch(70.7% 0.149 19.6)
-
Step 500
500
#E54B58
oklch(63.1% 0.19 19.8)
-
Step 600
600
#D1203E
oklch(55.6% 0.207 19.6)
-
Step 700
700 (this color)
#B81333
oklch(50.2% 0.192 19.6)
-
Step 800
800
#921328
oklch(42.7% 0.159 19.8)
-
Step 900
900
#761B25
oklch(37.8% 0.124 19.7)
-
Step 950
950
#451216
oklch(27% 0.078 19.6)
#B81333 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) | #4C4733 | 0.215 |
| Deuteranopia (no green cones) | #74692D | 0.195 |
| Tritanopia (no blue cones) | #CB0023 | 0.040 |
| Achromatopsia (no color) | #5D5D5D | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B81333
#B81333
oklch(50.2% 0.192 19.6)
- #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 #B81333, 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 0.018
- Scarlet #BE0119 ΔE 0.025
- Firebrick #B22222 ΔE 0.027
- Rouge #AB1239 ΔE 0.030
- Rufous #AE2012 ΔE 0.040
- Raspberry #B00149 ΔE 0.041
- Brown #A52A2A ΔE 0.043
Use #B81333 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.