#B4222A
Closest named color: Firebrick (#B22222). oklch(50.1% 0.181 24.4), rgb(180, 34, 42).
Aa
White text reads best on this color (6.55:1).
About this color
#B4222A is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.181 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.009 away. White text reads best on it, at 6.55:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #B4222A |
| RGB | rgb(180, 34, 42) |
| HSL | hsl(357, 68%, 42%) |
| OKLCH | oklch(50.1% 0.181 24.4) |
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 #B4222A | 6.55:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #B4222A | 3.20:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #B4222A text on white | 6.55:1 | AA | Lc 80.8 | Fine for body text |
| #B4222A text on black | 3.20:1 | AA large text | Lc -21.0 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDC9
oklch(88.4% 0.049 24.3)
-
Step 300
300
#F4ABA5
oklch(80.9% 0.087 24.4)
-
Step 400
400
#EB7A74
oklch(70.6% 0.141 24.4)
-
Step 500
500
#E15250
oklch(63.1% 0.179 24.5)
-
Step 600
600
#CC2E34
oklch(55.5% 0.194 24.6)
-
Step 700
700 (this color)
#B4222A
oklch(50.1% 0.181 24.4)
-
Step 800
800
#8F1D22
oklch(42.7% 0.149 24.3)
-
Step 900
900
#732020
oklch(37.7% 0.116 24.7)
-
Step 950
950
#441413
oklch(27% 0.075 24.6)
#B4222A 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) | #514929 | 0.197 |
| Deuteranopia (no green cones) | #746824 | 0.180 |
| Tritanopia (no blue cones) | #C60027 | 0.036 |
| Achromatopsia (no color) | #5D5D5D | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4222A
#B4222A
oklch(50.1% 0.181 24.4)
- #00717A
#00717A
oklch(50% 0.085 204.5)
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 #B4222A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.009
- Rufous #AE2012 ΔE 0.024
- Scarlet #BE0119 ΔE 0.025
- Lipstick Red #C0022F ΔE 0.029
- Brown #A52A2A ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.033
- Rust Red #AA2704 ΔE 0.035
- Rouge #AB1239 ΔE 0.037
Use #B4222A 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.