#B72D31
Closest named color: Firebrick (#B22222). oklch(51.7% 0.174 24.4), rgb(183, 45, 49).
Aa
White text reads best on this color (6.11:1).
About this color
#B72D31 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.174 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.022 away. White text reads best on it, at 6.11:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #B72D31 |
| RGB | rgb(183, 45, 49) |
| HSL | hsl(358, 61%, 45%) |
| OKLCH | oklch(51.7% 0.174 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 #B72D31 | 6.11:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #B72D31 | 3.43:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #B72D31 text on white | 6.11:1 | AA | Lc 79.2 | Fine for body text |
| #B72D31 text on black | 3.43:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CECA
oklch(88.5% 0.047 24.6)
-
Step 300
300
#F3ACA6
oklch(81% 0.085 24.5)
-
Step 400
400
#E97C76
oklch(70.7% 0.136 24.4)
-
Step 500
500
#DE5553
oklch(63% 0.172 24.2)
-
Step 600
600
#CA3337
oklch(55.6% 0.188 24.5)
-
Step 700
700 (this color)
#B72D31
oklch(51.7% 0.174 24.4)
-
Step 800
800
#8D2024
oklch(42.6% 0.144 24.1)
-
Step 900
900
#722222
oklch(37.8% 0.113 24.3)
-
Step 950
950
#431514
oklch(27% 0.072 24.4)
#B72D31 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) | #564F30 | 0.189 |
| Deuteranopia (no green cones) | #796D2C | 0.173 |
| Tritanopia (no blue cones) | #C90030 | 0.041 |
| Achromatopsia (no color) | #626262 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B72D31
#B72D31
oklch(51.7% 0.174 24.4)
- #007680
#007680
oklch(51.6% 0.088 205.1)
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 #B72D31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.022
- Dull Red #BB3F3F ΔE 0.031
- Scarlet #BE0119 ΔE 0.033
- Lipstick Red #C0022F ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.034
- Rufous #AE2012 ΔE 0.035
- Brown #A52A2A ΔE 0.039
- Rose Red #BE013C ΔE 0.041
Use #B72D31 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.