#661B6F
Closest named color: Rich Purple (#720058). oklch(38.2% 0.149 323.2), rgb(102, 27, 111).
Aa
White text reads best on this color (10.76:1).
About this color
#661B6F is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.149 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Purple (#720058), ΔE 0.051 away. White text reads best on it, at 10.76:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.95:1 |
| White text | 10.76:1 |
Values
| HEX | #661B6F |
| RGB | rgb(102, 27, 111) |
| HSL | hsl(294, 61%, 27%) |
| OKLCH | oklch(38.2% 0.149 323.2) |
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 #661B6F | 10.76:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #661B6F | 1.95:1 | Fails | Lc 9.9 | Not readable |
| #661B6F text on white | 10.76:1 | AAA | Lc 94.0 | Preferred for body text |
| #661B6F text on black | 1.95:1 | Fails | Lc -8.6 | 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
#FBF2FB
oklch(97.1% 0.015 325.7)
-
Step 100
100
#F5E3F7
oklch(93.6% 0.033 322.8)
-
Step 200
200
#EECCF1
oklch(88.5% 0.062 323.5)
-
Step 300
300
#E4A8EA
oklch(80.9% 0.111 323.5)
-
Step 400
400
#D475E0
oklch(70.7% 0.179 323)
-
Step 500
500
#C749D7
oklch(63.1% 0.228 323)
-
Step 600
600
#B31BC4
oklch(55.7% 0.248 323.3)
-
Step 700
700
#9902A9
oklch(49.1% 0.231 323.1)
-
Step 800
800
#7D0F89
oklch(42.8% 0.191 323.4)
-
Step 900
900 (this color)
#661B6F
oklch(38.2% 0.149 323.2)
-
Step 950
950
#3B1140
oklch(26.9% 0.094 323.3)
#661B6F 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) | #003871 | 0.155 |
| Deuteranopia (no green cones) | #29416D | 0.131 |
| Tritanopia (no blue cones) | #682A43 | 0.088 |
| Achromatopsia (no color) | #3E3E3E | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661B6F
#661B6F
oklch(38.2% 0.149 323.2)
- #005206
#005206
oklch(38% 0.126 143.3)
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 #661B6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.051
- Grape Purple #5D1451 ΔE 0.055
- Purple #800080 ΔE 0.061
- Velvet #750851 ΔE 0.062
- Royal Purple #4B006E ΔE 0.074
- Rebecca Purple #663399 ΔE 0.080
- Indigo #4B0082 ΔE 0.081
- Plum Purple #4E0550 ΔE 0.081
Use #661B6F 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.