#731F55
Closest named color: Velvet (#750851). oklch(39.3% 0.131 345.4), rgb(115, 31, 85).
Aa
White text reads best on this color (10.21:1).
About this color
#731F55 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.131 and its hue 345°. Its hue sits on the warm side of the wheel. The nearest named color is Velvet (#750851), ΔE 0.026 away. White text reads best on it, at 10.21:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.131) |
| Temperature | warm |
| Nearest name | Velvet (#750851) |
| Black text | 2.05:1 |
| White text | 10.21:1 |
Values
| HEX | #731F55 |
| RGB | rgb(115, 31, 85) |
| HSL | hsl(321, 58%, 29%) |
| OKLCH | oklch(39.3% 0.131 345.4) |
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 #731F55 | 10.21:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #731F55 | 2.05:1 | Fails | Lc 11.1 | Not readable |
| #731F55 text on white | 10.21:1 | AAA | Lc 92.8 | Preferred for body text |
| #731F55 text on black | 2.05:1 | Fails | Lc -9.7 | Not readable |
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 900.
-
Step 50
50
#FDF2F7
oklch(97.1% 0.013 347.9)
-
Step 100
100
#F9E3EE
oklch(93.7% 0.028 345.9)
-
Step 200
200
#F5CBE1
oklch(88.4% 0.055 345.4)
-
Step 300
300
#EFA7CF
oklch(80.9% 0.098 345.1)
-
Step 400
400
#E474B6
oklch(70.7% 0.158 345.5)
-
Step 500
500
#D849A4
oklch(63.1% 0.201 345.3)
-
Step 600
600
#C31F8F
oklch(55.5% 0.218 345.2)
-
Step 700
700
#A80A7A
oklch(49.1% 0.204 345.1)
-
Step 800
800
#891263
oklch(42.8% 0.169 345.4)
-
Step 900
900 (this color)
#731F55
oklch(39.3% 0.131 345.4)
-
Step 950
950
#41112F
oklch(27% 0.083 345.7)
#731F55 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) | #293857 | 0.144 |
| Deuteranopia (no green cones) | #424653 | 0.127 |
| Tritanopia (no blue cones) | #7B1E37 | 0.054 |
| Achromatopsia (no color) | #414141 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #731F55
#731F55
oklch(39.3% 0.131 345.4)
- #00533B
#00533B
oklch(39.2% 0.082 165.7)
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 #731F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Velvet #750851 ΔE 0.026
- Rich Purple #720058 ΔE 0.037
- Red Purple #820747 ΔE 0.041
- Wine #80013F ΔE 0.047
- Merlot #730039 ΔE 0.051
- Grape Purple #5D1451 ΔE 0.056
- Mulberry #920A4E ΔE 0.066
- Bordeaux #7B002C ΔE 0.068
Use #731F55 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.