#831557
Closest named color: Red Purple (#820747). oklch(41.3% 0.155 349.9), rgb(131, 21, 87).
Aa
White text reads best on this color (9.50:1).
About this color
#831557 is a dark, vivid red. In OKLCH its lightness is 41%, its chroma 0.155 and its hue 350°. 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 9.50:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Red Purple (#820747) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #831557 |
| RGB | rgb(131, 21, 87) |
| HSL | hsl(324, 72%, 30%) |
| OKLCH | oklch(41.3% 0.155 349.9) |
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 #831557 | 9.50:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #831557 | 2.20:1 | Fails | Lc 13.4 | Not readable |
| #831557 text on white | 9.50:1 | AAA | Lc 90.6 | Preferred for body text |
| #831557 text on black | 2.20:1 | Fails | Lc -11.7 | 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 800.
-
Step 50
50
#FCF2F6
oklch(97% 0.012 351)
-
Step 100
100
#F9E3EC
oklch(93.6% 0.027 350.9)
-
Step 200
200
#F4CCDE
oklch(88.5% 0.051 349.3)
-
Step 300
300
#EEA9C9
oklch(80.9% 0.09 349.9)
-
Step 400
400
#E278AD
oklch(70.7% 0.144 350.1)
-
Step 500
500
#D74F99
oklch(63.1% 0.186 350.1)
-
Step 600
600
#C22B84
oklch(55.7% 0.202 349.9)
-
Step 700
700
#A71B70
oklch(49.2% 0.188 349.7)
-
Step 800
800 (this color)
#831557
oklch(41.3% 0.155 349.9)
-
Step 900
900
#6D1E4B
oklch(37.7% 0.121 349.4)
-
Step 950
950
#40132C
oklch(26.9% 0.077 349.1)
#831557 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) | #2A3959 | 0.175 |
| Deuteranopia (no green cones) | #4A4C55 | 0.152 |
| Tritanopia (no blue cones) | #8D0B35 | 0.059 |
| Achromatopsia (no color) | #464646 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #831557
#831557
oklch(41.3% 0.155 349.9)
- #005944
#005944
oklch(41.3% 0.082 169.8)
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 #831557, 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 0.035
- Velvet #750851 ΔE 0.037
- Wine #80013F ΔE 0.040
- Rich Purple #720058 ΔE 0.048
- Berry #990F4B ΔE 0.052
- Purple Red #990147 ΔE 0.053
- Dark Fuchsia #9D0759 ΔE 0.054
Use #831557 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.