#B4282A
Closest named color: Firebrick (#B22222). oklch(50.6% 0.176 25.6), rgb(180, 40, 42).
Aa
White text reads best on this color (6.40:1).
About this color
#B4282A is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.176 and its hue 26°. 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 6.40:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #B4282A |
| RGB | rgb(180, 40, 42) |
| HSL | hsl(359, 64%, 43%) |
| OKLCH | oklch(50.6% 0.176 25.6) |
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 #B4282A | 6.40:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #B4282A | 3.27:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #B4282A text on white | 6.40:1 | AA | Lc 80.4 | Fine for body text |
| #B4282A text on black | 3.27:1 | AA large text | Lc -21.5 | 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
#FAE4E1
oklch(93.6% 0.025 26.9)
-
Step 200
200
#F7CEC9
oklch(88.5% 0.047 26.2)
-
Step 300
300
#F3ACA4
oklch(81% 0.085 26.3)
-
Step 400
400
#E97C74
oklch(70.7% 0.136 25.4)
-
Step 500
500
#DF554F
oklch(63.1% 0.174 25.8)
-
Step 600
600
#CB3233
oklch(55.7% 0.19 25.6)
-
Step 700
700 (this color)
#B4282A
oklch(50.6% 0.176 25.6)
-
Step 800
800
#8E2020
oklch(42.7% 0.146 25.9)
-
Step 900
900
#722220
oklch(37.8% 0.113 25.6)
-
Step 950
950
#431513
oklch(26.9% 0.072 25.6)
#B4282A 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) | #534B28 | 0.192 |
| Deuteranopia (no green cones) | #766A24 | 0.175 |
| Tritanopia (no blue cones) | #C6002B | 0.039 |
| Achromatopsia (no color) | #5F5F5F | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4282A
#B4282A
oklch(50.6% 0.176 25.6)
- #00737D
#00737D
oklch(50.7% 0.087 205.4)
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 #B4282A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.011
- Rufous #AE2012 ΔE 0.024
- Rusty Red #AF2F0D ΔE 0.028
- Scarlet #BE0119 ΔE 0.028
- Brown #A52A2A ΔE 0.030
- Lipstick Red #C0022F ΔE 0.033
- Rust Red #AA2704 ΔE 0.034
- Dull Red #BB3F3F ΔE 0.042
Use #B4282A 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.