#661F6F
Closest named color: Rich Purple (#720058). oklch(38.6% 0.144 323), rgb(102, 31, 111).
Aa
White text reads best on this color (10.55:1).
About this color
#661F6F is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.144 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 0.053 away. White text reads best on it, at 10.55:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.99:1 |
| White text | 10.55:1 |
Values
| HEX | #661F6F |
| RGB | rgb(102, 31, 111) |
| HSL | hsl(293, 56%, 28%) |
| OKLCH | oklch(38.6% 0.144 323) |
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 #661F6F | 10.55:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #661F6F | 1.99:1 | Fails | Lc 10.3 | Not readable |
| #661F6F text on white | 10.55:1 | AAA | Lc 93.6 | Preferred for body text |
| #661F6F text on black | 1.99:1 | Fails | Lc -8.9 | 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
#F4E3F6
oklch(93.5% 0.031 322.6)
-
Step 200
200
#EDCCF0
oklch(88.4% 0.06 323.4)
-
Step 300
300
#E3A9E9
oklch(80.9% 0.108 323.3)
-
Step 400
400
#D377DE
oklch(70.7% 0.173 323.2)
-
Step 500
500
#C54DD4
oklch(63.1% 0.219 323.1)
-
Step 600
600
#B024C1
oklch(55.5% 0.239 323)
-
Step 700
700
#9710A7
oklch(49% 0.223 322.9)
-
Step 800
800
#7B1587
oklch(42.7% 0.185 323.1)
-
Step 900
900 (this color)
#661F6F
oklch(38.6% 0.144 323)
-
Step 950
950
#3A133F
oklch(27% 0.089 323)
#661F6F 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) | #073A71 | 0.148 |
| Deuteranopia (no green cones) | #2B426D | 0.126 |
| Tritanopia (no blue cones) | #682D44 | 0.087 |
| Achromatopsia (no color) | #3F3F3F | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661F6F
#661F6F
oklch(38.6% 0.144 323)
- #005404
#005404
oklch(38.7% 0.129 143)
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 #661F6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.053
- Grape Purple #5D1451 ΔE 0.056
- Velvet #750851 ΔE 0.063
- Purple #800080 ΔE 0.063
- Rebecca Purple #663399 ΔE 0.077
- Royal Purple #4B006E ΔE 0.078
- Indigo #4B0082 ΔE 0.084
- Plum Purple #4E0550 ΔE 0.084
Use #661F6F 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.