#B72E24
Closest named color: Firebrick (#B22222). oklch(51.6% 0.175 28.9), rgb(183, 46, 36).
Aa
White text reads best on this color (6.12:1).
About this color
#B72E24 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.175 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.021 away. White text reads best on it, at 6.12:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.42:1 |
| White text | 6.12:1 |
Values
| HEX | #B72E24 |
| RGB | rgb(183, 46, 36) |
| HSL | hsl(4, 67%, 43%) |
| OKLCH | oklch(51.6% 0.175 28.9) |
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 #B72E24 | 6.12:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #B72E24 | 3.42:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #B72E24 text on white | 6.12:1 | AA | Lc 79.2 | Fine for body text |
| #B72E24 text on black | 3.42:1 | AA large text | Lc -22.6 | 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
#F7CEC8
oklch(88.5% 0.047 27.8)
-
Step 300
300
#F3ACA1
oklch(80.9% 0.086 28.9)
-
Step 400
400
#E97D6F
oklch(70.7% 0.136 28.6)
-
Step 500
500
#DF5648
oklch(63.1% 0.174 28.8)
-
Step 600
600
#CA3429
oklch(55.6% 0.189 28.9)
-
Step 700
700 (this color)
#B72E24
oklch(51.6% 0.175 28.9)
-
Step 800
800
#8E2119
oklch(42.8% 0.146 29)
-
Step 900
900
#72231B
oklch(37.8% 0.113 29.2)
-
Step 950
950
#431611
oklch(27.1% 0.071 28.9)
#B72E24 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) | #584F21 | 0.187 |
| Deuteranopia (no green cones) | #7A6D1E | 0.171 |
| Tritanopia (no blue cones) | #CA002D | 0.047 |
| Achromatopsia (no color) | #626262 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B72E24
#B72E24
oklch(51.6% 0.175 28.9)
- #007583
#007583
oklch(51.5% 0.089 209.3)
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 #B72E24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.021
- Rusty Red #AF2F0D ΔE 0.023
- Rufous #AE2012 ΔE 0.030
- Scarlet #BE0119 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.035
- Rust Red #AA2704 ΔE 0.036
- Sinopia #BB3E03 ΔE 0.038
- Brown #A52A2A ΔE 0.040
Use #B72E24 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.