#831B4E
Closest named color: Red Purple (#820747). oklch(41.4% 0.145 356), rgb(131, 27, 78).
Aa
White text reads best on this color (9.40:1).
About this color
#831B4E is a dark, vivid red. In OKLCH its lightness is 41%, its chroma 0.145 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Red Purple (#820747), ΔE 0.021 away. White text reads best on it, at 9.40:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Red Purple (#820747) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #831B4E |
| RGB | rgb(131, 27, 78) |
| HSL | hsl(331, 66%, 31%) |
| OKLCH | oklch(41.4% 0.145 356) |
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 #831B4E | 9.40:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #831B4E | 2.23:1 | Fails | Lc 13.5 | Not readable |
| #831B4E text on white | 9.40:1 | AAA | Lc 90.5 | Preferred for body text |
| #831B4E text on black | 2.23:1 | Fails | Lc -11.8 | 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
#F8E3EA
oklch(93.5% 0.025 355.3)
-
Step 200
200
#F4CDDA
oklch(88.5% 0.047 356.1)
-
Step 300
300
#EEAAC2
oklch(80.9% 0.085 356.3)
-
Step 400
400
#E27AA3
oklch(70.7% 0.136 356.1)
-
Step 500
500
#D6538D
oklch(63% 0.174 355.8)
-
Step 600
600
#C13277
oklch(55.6% 0.188 355.8)
-
Step 700
700
#A62264
oklch(49% 0.175 355.7)
-
Step 800
800 (this color)
#831B4E
oklch(41.4% 0.145 356)
-
Step 900
900
#6D2143
oklch(37.7% 0.113 356.4)
-
Step 950
950
#401528
oklch(27% 0.071 355.4)
#831B4E 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) | #313A4F | 0.163 |
| Deuteranopia (no green cones) | #4E4D4C | 0.145 |
| Tritanopia (no blue cones) | #8E0C32 | 0.048 |
| Achromatopsia (no color) | #464646 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831B4E
#831B4E
oklch(41.4% 0.145 356)
- #00594A
#00594A
oklch(41.5% 0.077 176.1)
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 #831B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Purple #820747 ΔE 0.021
- Mulberry #920A4E ΔE 0.031
- Wine #80013F ΔE 0.031
- Red Wine #8C0034 ΔE 0.044
- Velvet #750851 ΔE 0.044
- Berry #990F4B ΔE 0.046
- Purple Red #990147 ΔE 0.047
- Merlot #730039 ΔE 0.056
Use #831B4E 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.