#B73C4B
Closest named color: Dull Red (#BB3F3F). oklch(53.7% 0.158 17.3), rgb(183, 60, 75).
Aa
White text reads best on this color (5.58:1).
About this color
#B73C4B is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.158 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.021 away. White text reads best on it, at 5.58:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.76:1 |
| White text | 5.58:1 |
Values
| HEX | #B73C4B |
| RGB | rgb(183, 60, 75) |
| HSL | hsl(353, 51%, 48%) |
| OKLCH | oklch(53.7% 0.158 17.3) |
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 #B73C4B | 5.58:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #B73C4B | 3.76:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #B73C4B text on white | 5.58:1 | AA | Lc 76.9 | Fine for body text |
| #B73C4B text on black | 3.76:1 | AA large text | Lc -24.8 | 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 600.
-
Step 50
50
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E5
oklch(93.6% 0.02 17.5)
-
Step 200
200
#F2CFD0
oklch(88.4% 0.039 16)
-
Step 300
300
#EBAFB0
oklch(81% 0.07 17.6)
-
Step 400
400
#DE8287
oklch(70.7% 0.114 16.9)
-
Step 500
500
#D25F69
oklch(63% 0.145 16.9)
-
Step 600
600 (this color)
#B73C4B
oklch(53.7% 0.158 17.3)
-
Step 700
700
#A33341
oklch(49.1% 0.147 17.3)
-
Step 800
800
#852C36
oklch(42.8% 0.122 17.4)
-
Step 900
900
#6B292F
oklch(37.8% 0.094 17.3)
-
Step 950
950
#3F191B
oklch(27.1% 0.059 18.7)
#B73C4B 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) | #5B584B | 0.174 |
| Deuteranopia (no green cones) | #7B7148 | 0.158 |
| Tritanopia (no blue cones) | #C82142 | 0.041 |
| Achromatopsia (no color) | #686868 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B73C4B
#B73C4B
oklch(53.7% 0.158 17.3)
- #007E80
#007E80
oklch(53.8% 0.092 196.7)
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 #B73C4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.021
- Dusty Red #B9484E ΔE 0.023
- Dark Rose #B5485D ΔE 0.027
- Light Burgundy #A8415B ΔE 0.036
- Light Maroon #A24857 ΔE 0.043
- Deep Rose #C74767 ΔE 0.052
- Rose Red #BE013C ΔE 0.053
- Firebrick #B22222 ΔE 0.053
Use #B73C4B 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.