#BB2B23
Closest named color: Firebrick (#B22222). oklch(52% 0.182 28.5), rgb(187, 43, 35).
Aa
White text reads best on this color (6.02:1).
About this color
#BB2B23 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.182 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.024 away. White text reads best on it, at 6.02:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.182) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #BB2B23 |
| RGB | rgb(187, 43, 35) |
| HSL | hsl(3, 68%, 44%) |
| OKLCH | oklch(52% 0.182 28.5) |
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 #BB2B23 | 6.02:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #BB2B23 | 3.48:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #BB2B23 text on white | 6.02:1 | AA | Lc 78.6 | Fine for body text |
| #BB2B23 text on black | 3.48:1 | AA large text | Lc -23.2 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CEC7
oklch(88.6% 0.049 29.1)
-
Step 300
300
#F4ABA1
oklch(80.8% 0.088 27.8)
-
Step 400
400
#EB7B6D
oklch(70.6% 0.141 28.5)
-
Step 500
500
#E15346
oklch(63% 0.179 28.4)
-
Step 600
600
#CD2F26
oklch(55.6% 0.196 28.6)
-
Step 700
700 (this color)
#BB2B23
oklch(52% 0.182 28.5)
-
Step 800
800
#8F1E17
oklch(42.7% 0.15 28.8)
-
Step 900
900
#73201A
oklch(37.6% 0.117 28.2)
-
Step 950
950
#441510
oklch(27.1% 0.074 28.9)
#BB2B23 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) | #584F20 | 0.195 |
| Deuteranopia (no green cones) | #7B6E1C | 0.178 |
| Tritanopia (no blue cones) | #CE002B | 0.044 |
| Achromatopsia (no color) | #636363 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB2B23
#BB2B23
oklch(52% 0.182 28.5)
- #007784
#007784
oklch(52.1% 0.09 208.1)
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 #BB2B23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.024
- Scarlet #BE0119 ΔE 0.029
- Rusty Red #AF2F0D ΔE 0.029
- Rufous #AE2012 ΔE 0.034
- Dull Red #BB3F3F ΔE 0.035
- Lipstick Red #C0022F ΔE 0.036
- Sinopia #BB3E03 ΔE 0.039
- Rust Red #AA2704 ΔE 0.041
Use #BB2B23 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.