#B72137
Closest named color: Lipstick Red (#C0022F). oklch(50.8% 0.183 19.8), rgb(183, 33, 55).
Aa
White text reads best on this color (6.39:1).
About this color
#B72137 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.183 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Lipstick Red (#C0022F), ΔE 0.022 away. White text reads best on it, at 6.39:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Lipstick Red (#C0022F) |
| Black text | 3.28:1 |
| White text | 6.39:1 |
Values
| HEX | #B72137 |
| RGB | rgb(183, 33, 55) |
| HSL | hsl(351, 69%, 42%) |
| OKLCH | oklch(50.8% 0.183 19.8) |
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 #B72137 | 6.39:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #B72137 | 3.28:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #B72137 text on white | 6.39:1 | AA | Lc 80.1 | Fine for body text |
| #B72137 text on black | 3.28:1 | AA large text | Lc -21.7 | 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
#FDF2F2
oklch(97% 0.012 17.4)
-
Step 100
100
#FBE4E3
oklch(93.7% 0.025 20.6)
-
Step 200
200
#F8CDCC
oklch(88.5% 0.049 19.7)
-
Step 300
300
#F5AAA9
oklch(81% 0.089 20)
-
Step 400
400
#EC797C
oklch(70.8% 0.142 19.7)
-
Step 500
500
#E2505A
oklch(63.2% 0.181 20.1)
-
Step 600
600
#CD2A40
oklch(55.6% 0.197 19.9)
-
Step 700
700 (this color)
#B72137
oklch(50.8% 0.183 19.8)
-
Step 800
800
#901A2A
oklch(42.8% 0.152 20)
-
Step 900
900
#731E26
oklch(37.6% 0.118 19.8)
-
Step 950
950
#441317
oklch(26.9% 0.075 19)
#B72137 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) | #504B37 | 0.203 |
| Deuteranopia (no green cones) | #756A32 | 0.185 |
| Tritanopia (no blue cones) | #C9002B | 0.036 |
| Achromatopsia (no color) | #5F5F5F | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B72137
#B72137
oklch(50.8% 0.183 19.8)
- #007479
#007479
oklch(50.8% 0.086 200.1)
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 #B72137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lipstick Red #C0022F ΔE 0.022
- Rose Red #BE013C ΔE 0.024
- Firebrick #B22222 ΔE 0.025
- Scarlet #BE0119 ΔE 0.030
- Rouge #AB1239 ΔE 0.033
- Rufous #AE2012 ΔE 0.040
- Brown #A52A2A ΔE 0.040
- Dull Red #BB3F3F ΔE 0.045
Use #B72137 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.