#B72123
Closest named color: Firebrick (#B22222). oklch(50.5% 0.185 26.5), rgb(183, 33, 35).
Aa
White text reads best on this color (6.45:1).
About this color
#B72123 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.185 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.010 away. White text reads best on it, at 6.45:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.185) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #B72123 |
| RGB | rgb(183, 33, 35) |
| HSL | hsl(359, 69%, 42%) |
| OKLCH | oklch(50.5% 0.185 26.5) |
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 #B72123 | 6.45:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #B72123 | 3.25:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #B72123 text on white | 6.45:1 | AA | Lc 80.3 | Fine for body text |
| #B72123 text on black | 3.25:1 | 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
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F5ABA2
oklch(81% 0.089 26.9)
-
Step 400
400
#EC7A70
oklch(70.7% 0.142 26.5)
-
Step 500
500
#E3514A
oklch(63.2% 0.183 26.4)
-
Step 600
600
#CE2B2C
oklch(55.6% 0.199 26.4)
-
Step 700
700 (this color)
#B72123
oklch(50.5% 0.185 26.5)
-
Step 800
800
#901B1B
oklch(42.6% 0.152 26.6)
-
Step 900
900
#741F1C
oklch(37.7% 0.119 26.6)
-
Step 950
950
#441411
oklch(26.9% 0.075 26.9)
#B72123 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) | #524A21 | 0.201 |
| Deuteranopia (no green cones) | #776A1C | 0.183 |
| Tritanopia (no blue cones) | #CA0024 | 0.038 |
| Achromatopsia (no color) | #5E5E5E | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B72123
#B72123
oklch(50.5% 0.185 26.5)
- #00727D
#00727D
oklch(50.4% 0.086 206.5)
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 #B72123, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.010
- Scarlet #BE0119 ΔE 0.020
- Rufous #AE2012 ΔE 0.023
- Lipstick Red #C0022F ΔE 0.029
- Rusty Red #AF2F0D ΔE 0.029
- Rust Red #AA2704 ΔE 0.034
- Brown #A52A2A ΔE 0.036
- Rose Red #BE013C ΔE 0.040
Use #B72123 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.