#BB2F1B
Closest named color: Rusty Red (#AF2F0D). oklch(52.3% 0.18 31.3), rgb(187, 47, 27).
Aa
White text reads best on this color (5.93:1).
About this color
#BB2F1B is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.180 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.026 away. White text reads best on it, at 5.93:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.180) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #BB2F1B |
| RGB | rgb(187, 47, 27) |
| HSL | hsl(8, 75%, 42%) |
| OKLCH | oklch(52.3% 0.18 31.3) |
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 #BB2F1B | 5.93:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #BB2F1B | 3.53:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #BB2F1B text on white | 5.93:1 | AA | Lc 78.3 | Fine for body text |
| #BB2F1B text on black | 3.53:1 | AA large text | Lc -23.5 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F7CEC6
oklch(88.4% 0.048 30.9)
-
Step 300
300
#F3AC9E
oklch(80.8% 0.087 31.5)
-
Step 400
400
#EA7D69
oklch(70.8% 0.139 31.6)
-
Step 500
500
#E0553F
oklch(63% 0.178 31.4)
-
Step 600
600
#CC321C
oklch(55.6% 0.194 31.3)
-
Step 700
700 (this color)
#BB2F1B
oklch(52.3% 0.18 31.3)
-
Step 800
800
#8F2010
oklch(42.8% 0.149 31.4)
-
Step 900
900
#732216
oklch(37.8% 0.116 31.3)
-
Step 950
950
#44150E
oklch(27% 0.074 30.9)
#BB2F1B 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) | #5A5016 | 0.192 |
| Deuteranopia (no green cones) | #7D6F12 | 0.173 |
| Tritanopia (no blue cones) | #CE002C | 0.050 |
| Achromatopsia (no color) | #646464 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB2F1B
#BB2F1B
oklch(52.3% 0.18 31.3)
- #007788
#007788
oklch(52.2% 0.091 212)
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 #BB2F1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.026
- Sinopia #BB3E03 ΔE 0.029
- Firebrick #B22222 ΔE 0.030
- Dull Red #BB3F3F ΔE 0.036
- Scarlet #BE0119 ΔE 0.036
- Rufous #AE2012 ΔE 0.037
- Rust Red #AA2704 ΔE 0.041
- Lipstick Red #C0022F ΔE 0.045
Use #BB2F1B 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.