#B22A1F
Closest named color: Firebrick (#B22222). oklch(50.3% 0.174 29.3), rgb(178, 42, 31).
Aa
White text reads best on this color (6.47:1).
About this color
#B22A1F is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.174 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.011 away. White text reads best on it, at 6.47:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #B22A1F |
| RGB | rgb(178, 42, 31) |
| HSL | hsl(4, 70%, 41%) |
| OKLCH | oklch(50.3% 0.174 29.3) |
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 #B22A1F | 6.47:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #B22A1F | 3.24:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #B22A1F text on white | 6.47:1 | AA | Lc 80.7 | Fine for body text |
| #B22A1F text on black | 3.24:1 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E1
oklch(93.6% 0.025 26.9)
-
Step 200
200
#F7CEC7
oklch(88.5% 0.048 29.4)
-
Step 300
300
#F2ACA1
oklch(80.8% 0.084 29)
-
Step 400
400
#E87D6E
oklch(70.6% 0.135 29.2)
-
Step 500
500
#DE5747
oklch(63.1% 0.172 29.5)
-
Step 600
600
#CA3528
oklch(55.6% 0.188 29.4)
-
Step 700
700 (this color)
#B22A1F
oklch(50.3% 0.174 29.3)
-
Step 800
800
#8D2219
oklch(42.7% 0.144 29.3)
-
Step 900
900
#71231B
oklch(37.6% 0.112 29.2)
-
Step 950
950
#431610
oklch(27% 0.071 30)
#B22A1F 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) | #544B1C | 0.187 |
| Deuteranopia (no green cones) | #766918 | 0.169 |
| Tritanopia (no blue cones) | #C40029 | 0.044 |
| Achromatopsia (no color) | #5E5E5E | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B22A1F
#B22A1F
oklch(50.3% 0.174 29.3)
- #00717F
#00717F
oklch(50.3% 0.087 209.7)
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 #B22A1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.011
- Rusty Red #AF2F0D ΔE 0.016
- Rufous #AE2012 ΔE 0.017
- Rust Red #AA2704 ΔE 0.024
- Brown #A52A2A ΔE 0.029
- Scarlet #BE0119 ΔE 0.033
- Brick #A03623 ΔE 0.036
- Lipstick Red #C0022F ΔE 0.043
Use #B22A1F 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.