#B73F47
Closest named color: Dull Red (#BB3F3F). oklch(53.9% 0.155 20.2), rgb(183, 63, 71).
Aa
White text reads best on this color (5.50:1).
About this color
#B73F47 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.155 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.013 away. White text reads best on it, at 5.50:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #B73F47 |
| RGB | rgb(183, 63, 71) |
| HSL | hsl(356, 49%, 48%) |
| OKLCH | oklch(53.9% 0.155 20.2) |
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 #B73F47 | 5.50:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #B73F47 | 3.81:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #B73F47 text on white | 5.50:1 | AA | Lc 76.6 | Fine for body text |
| #B73F47 text on black | 3.81:1 | AA large text | Lc -25.2 | 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
#F7E5E4
oklch(93.6% 0.02 21.4)
-
Step 200
200
#F2D0CE
oklch(88.6% 0.038 21.9)
-
Step 300
300
#EAAFAE
oklch(80.8% 0.069 19.8)
-
Step 400
400
#DD8383
oklch(70.6% 0.111 20.2)
-
Step 500
500
#D26164
oklch(63.1% 0.143 20.4)
-
Step 600
600 (this color)
#B73F47
oklch(53.9% 0.155 20.2)
-
Step 700
700
#A2353D
oklch(49% 0.144 20)
-
Step 800
800
#842D32
oklch(42.7% 0.119 20.4)
-
Step 900
900
#6A2A2C
oklch(37.7% 0.092 20.7)
-
Step 950
950
#3F191A
oklch(27.1% 0.06 20.3)
#B73F47 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) | #5E5946 | 0.168 |
| Deuteranopia (no green cones) | #7C7244 | 0.155 |
| Tritanopia (no blue cones) | #C82543 | 0.042 |
| Achromatopsia (no color) | #696969 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B73F47
#B73F47
oklch(53.9% 0.155 20.2)
- #007E84
#007E84
oklch(53.9% 0.092 200.7)
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 #B73F47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.013
- Dusty Red #B9484E ΔE 0.018
- Dark Rose #B5485D ΔE 0.030
- Light Burgundy #A8415B ΔE 0.040
- Light Maroon #A24857 ΔE 0.044
- Firebrick #B22222 ΔE 0.053
- Deep Rose #C74767 ΔE 0.054
- Sinopia #BB3E03 ΔE 0.056
Use #B73F47 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.