#831C55
Closest named color: Red Purple (#820747). oklch(41.8% 0.147 351.8), rgb(131, 28, 85).
Aa
White text reads best on this color (9.28:1).
About this color
#831C55 is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.147 and its hue 352°. Its hue sits on the warm side of the wheel. The nearest named color is Red Purple (#820747), ΔE 0.027 away. White text reads best on it, at 9.28:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Red Purple (#820747) |
| Black text | 2.26:1 |
| White text | 9.28:1 |
Values
| HEX | #831C55 |
| RGB | rgb(131, 28, 85) |
| HSL | hsl(327, 65%, 31%) |
| OKLCH | oklch(41.8% 0.147 351.8) |
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 #831C55 | 9.28:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #831C55 | 2.26:1 | Fails | Lc 13.7 | Not readable |
| #831C55 text on white | 9.28:1 | AAA | Lc 90.2 | Preferred for body text |
| #831C55 text on black | 2.26:1 | Fails | Lc -12.1 | 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 800.
-
Step 50
50
#FCF2F6
oklch(97% 0.012 351)
-
Step 100
100
#F8E3EC
oklch(93.5% 0.026 349.8)
-
Step 200
200
#F3CDDC
oklch(88.5% 0.047 352.4)
-
Step 300
300
#EDAAC7
oklch(80.9% 0.087 351.5)
-
Step 400
400
#E07AAA
oklch(70.7% 0.137 351.6)
-
Step 500
500
#D55395
oklch(63.1% 0.177 351.8)
-
Step 600
600
#C0317F
oklch(55.6% 0.192 351.9)
-
Step 700
700
#A5226B
oklch(49.1% 0.178 352)
-
Step 800
800 (this color)
#831C55
oklch(41.8% 0.147 351.8)
-
Step 900
900
#6C2148
oklch(37.7% 0.115 351.9)
-
Step 950
950
#40152A
oklch(27.1% 0.072 352.6)
#831C55 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) | #2F3B56 | 0.165 |
| Deuteranopia (no green cones) | #4C4E53 | 0.147 |
| Tritanopia (no blue cones) | #8D1336 | 0.053 |
| Achromatopsia (no color) | #474747 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831C55
#831C55
oklch(41.8% 0.147 351.8)
- #005A47
#005A47
oklch(41.7% 0.081 172)
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 #831C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Purple #820747 ΔE 0.027
- Mulberry #920A4E ΔE 0.033
- Wine #80013F ΔE 0.040
- Velvet #750851 ΔE 0.043
- Berry #990F4B ΔE 0.049
- Purple Red #990147 ΔE 0.051
- Dark Fuchsia #9D0759 ΔE 0.054
- Red Wine #8C0034 ΔE 0.054
Use #831C55 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.