#BB2B1A
Closest named color: Rusty Red (#AF2F0D). oklch(52% 0.183 30.6), rgb(187, 43, 26).
Aa
White text reads best on this color (6.04:1).
About this color
#BB2B1A is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.183 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 6.04:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #BB2B1A |
| RGB | rgb(187, 43, 26) |
| HSL | hsl(6, 76%, 42%) |
| OKLCH | oklch(52% 0.183 30.6) |
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 #BB2B1A | 6.04:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #BB2B1A | 3.47:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #BB2B1A text on white | 6.04:1 | AA | Lc 78.7 | Fine for body text |
| #BB2B1A text on black | 3.47:1 | AA large text | Lc -23.1 | 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
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CEC6
oklch(88.5% 0.049 30.7)
-
Step 300
300
#F4AC9E
oklch(80.9% 0.088 31.3)
-
Step 400
400
#EB7B69
oklch(70.6% 0.142 30.5)
-
Step 500
500
#E25340
oklch(63.1% 0.182 30.4)
-
Step 600
600
#CD2F1D
oklch(55.6% 0.197 30.5)
-
Step 700
700 (this color)
#BB2B1A
oklch(52% 0.183 30.6)
-
Step 800
800
#901E10
oklch(42.8% 0.152 30.8)
-
Step 900
900
#732116
oklch(37.7% 0.117 30.8)
-
Step 950
950
#44150E
oklch(27% 0.074 30.9)
#BB2B1A 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) | #594E16 | 0.194 |
| Deuteranopia (no green cones) | #7C6E10 | 0.177 |
| Tritanopia (no blue cones) | #CE0029 | 0.046 |
| Achromatopsia (no color) | #636363 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB2B1A
#BB2B1A
oklch(52% 0.183 30.6)
- #007686
#007686
oklch(51.9% 0.09 211.1)
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 #BB2B1A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.026
- Firebrick #B22222 ΔE 0.026
- Scarlet #BE0119 ΔE 0.031
- Rufous #AE2012 ΔE 0.033
- Sinopia #BB3E03 ΔE 0.034
- Rust Red #AA2704 ΔE 0.039
- Dull Red #BB3F3F ΔE 0.039
- Lipstick Red #C0022F ΔE 0.041
Use #BB2B1A 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.