#571B87
Closest named color: Indigo (#4B0082). oklch(37.8% 0.167 304.5), rgb(87, 27, 135).
Aa
White text reads best on this color (10.98:1).
About this color
#571B87 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.167 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.042 away. White text reads best on it, at 10.98:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.167) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.91:1 |
| White text | 10.98:1 |
Values
| HEX | #571B87 |
| RGB | rgb(87, 27, 135) |
| HSL | hsl(273, 67%, 32%) |
| OKLCH | oklch(37.8% 0.167 304.5) |
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 #571B87 | 10.98:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #571B87 | 1.91:1 | Fails | Lc 9.5 | Not readable |
| #571B87 text on white | 10.98:1 | AAA | Lc 94.4 | Preferred for body text |
| #571B87 text on black | 1.91:1 | Fails | Lc -8.2 | 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
#F8F3FF
oklch(97.1% 0.017 304.8)
-
Step 100
100
#EFE4FE
oklch(93.5% 0.037 304.8)
-
Step 200
200
#E3CEFF
oklch(88.4% 0.07 304.5)
-
Step 300
300
#D2ADFF
oklch(80.9% 0.119 304.6)
-
Step 400
400
#BC7CFF
oklch(70.7% 0.191 304.5)
-
Step 500
500
#AD4FFF
oklch(63.1% 0.249 304.6)
-
Step 600
600
#9A18F2
oklch(55.6% 0.279 304.3)
-
Step 700
700
#8400D1
oklch(49.2% 0.256 304.7)
-
Step 800
800
#6B0DAA
oklch(42.7% 0.214 304.5)
-
Step 900
900 (this color)
#571B87
oklch(37.8% 0.167 304.5)
-
Step 950
950
#33124F
oklch(27% 0.107 304.9)
#571B87 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) | #003B8A | 0.123 |
| Deuteranopia (no green cones) | #003C85 | 0.124 |
| Tritanopia (no blue cones) | #4E3751 | 0.118 |
| Achromatopsia (no color) | #3C3C3C | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #571B87
#571B87
oklch(37.8% 0.167 304.5)
- #374A00
#374A00
oklch(37.9% 0.095 124.6)
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 #571B87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.042
- Royal Purple #4B006E ΔE 0.061
- Rebecca Purple #663399 ΔE 0.062
- Chrysanthemum #560BAD ΔE 0.064
- Imperial Purple #480CA8 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.072
- Blueberry #464196 ΔE 0.084
- Purple #800080 ΔE 0.090
Use #571B87 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.