#661F71
Closest named color: Rich Purple (#720058). oklch(38.7% 0.146 322), rgb(102, 31, 113).
Aa
White text reads best on this color (10.50:1).
About this color
#661F71 is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.146 and its hue 322°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Purple (#720058), ΔE 0.056 away. White text reads best on it, at 10.50:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.99:1 |
| White text | 10.50:1 |
Values
| HEX | #661F71 |
| RGB | rgb(102, 31, 113) |
| HSL | hsl(292, 57%, 28%) |
| OKLCH | oklch(38.7% 0.146 322) |
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 #661F71 | 10.50:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #661F71 | 1.99:1 | Fails | Lc 10.4 | Not readable |
| #661F71 text on white | 10.50:1 | AAA | Lc 93.5 | Preferred for body text |
| #661F71 text on black | 1.99:1 | Fails | Lc -9.0 | 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
#FAF2FB
oklch(97% 0.015 322.3)
-
Step 100
100
#F4E3F7
oklch(93.5% 0.032 321.1)
-
Step 200
200
#EDCCF1
oklch(88.4% 0.061 322.6)
-
Step 300
300
#E2A9EB
oklch(80.9% 0.11 321.8)
-
Step 400
400
#D277E0
oklch(70.7% 0.175 322.1)
-
Step 500
500
#C44CD7
oklch(63% 0.223 321.9)
-
Step 600
600
#B022C4
oklch(55.6% 0.243 322.2)
-
Step 700
700
#970EAA
oklch(49.2% 0.226 321.9)
-
Step 800
800
#7B1489
oklch(42.7% 0.187 322.4)
-
Step 900
900 (this color)
#661F71
oklch(38.7% 0.146 322)
-
Step 950
950
#3A1240
oklch(26.9% 0.092 322.2)
#661F71 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) | #033A73 | 0.150 |
| Deuteranopia (no green cones) | #2A426F | 0.127 |
| Tritanopia (no blue cones) | #672D45 | 0.088 |
| Achromatopsia (no color) | #3F3F3F | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661F71
#661F71
oklch(38.7% 0.146 322)
- #055400
#055400
oklch(38.7% 0.13 142)
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 #661F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.056
- Grape Purple #5D1451 ΔE 0.059
- Purple #800080 ΔE 0.061
- Velvet #750851 ΔE 0.065
- Rebecca Purple #663399 ΔE 0.074
- Royal Purple #4B006E ΔE 0.077
- Indigo #4B0082 ΔE 0.082
- Plum Purple #4E0550 ΔE 0.086
Use #661F71 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.