#BB0B18
Closest named color: Scarlet (#BE0119). oklch(50.2% 0.2 26.7), rgb(187, 11, 24).
Aa
White text reads best on this color (6.61:1).
About this color
#BB0B18 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.200 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.007 away. White text reads best on it, at 6.61:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #BB0B18 |
| RGB | rgb(187, 11, 24) |
| HSL | hsl(356, 89%, 39%) |
| OKLCH | oklch(50.2% 0.2 26.7) |
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 #BB0B18 | 6.61:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #BB0B18 | 3.17:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #BB0B18 text on white | 6.61:1 | AA | Lc 80.3 | Fine for body text |
| #BB0B18 text on black | 3.17:1 | AA large text | Lc -21.5 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC6
oklch(88.4% 0.054 26.7)
-
Step 300
300
#F9A99F
oklch(81% 0.096 27.2)
-
Step 400
400
#F2766B
oklch(70.8% 0.155 26.9)
-
Step 500
500
#E94943
oklch(63.2% 0.198 26.6)
-
Step 600
600
#D41A22
oklch(55.6% 0.215 26.6)
-
Step 700
700 (this color)
#BB0B18
oklch(50.2% 0.2 26.7)
-
Step 800
800
#950E14
oklch(42.7% 0.166 26.7)
-
Step 900
900
#771918
oklch(37.6% 0.129 26.4)
-
Step 950
950
#46110F
oklch(26.9% 0.082 26.3)
#BB0B18 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) | #4F4615 | 0.219 |
| Deuteranopia (no green cones) | #77690A | 0.197 |
| Tritanopia (no blue cones) | #CF0015 | 0.041 |
| Achromatopsia (no color) | #5D5D5D | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB0B18
#BB0B18
oklch(50.2% 0.2 26.7)
- #00717C
#00717C
oklch(50.1% 0.086 206.6)
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 #BB0B18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.007
- Firebrick #B22222 ΔE 0.021
- Lipstick Red #C0022F ΔE 0.024
- Rufous #AE2012 ΔE 0.028
- Rose Red #BE013C ΔE 0.039
- Rusty Red #AF2F0D ΔE 0.039
- Rust Red #AA2704 ΔE 0.040
- Brown #A52A2A ΔE 0.045
Use #BB0B18 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.