#661A66
Closest named color: Rich Purple (#720058). oklch(37.5% 0.142 328), rgb(102, 26, 102).
Aa
White text reads best on this color (11.02:1).
About this color
#661A66 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.142 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Purple (#720058), ΔE 0.040 away. White text reads best on it, at 11.02:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.90:1 |
| White text | 11.02:1 |
Values
| HEX | #661A66 |
| RGB | rgb(102, 26, 102) |
| HSL | hsl(300, 59%, 25%) |
| OKLCH | oklch(37.5% 0.142 328) |
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 #661A66 | 11.02:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #661A66 | 1.90:1 | Fails | Lc 9.4 | Not readable |
| #661A66 text on white | 11.02:1 | AAA | Lc 94.6 | Preferred for body text |
| #661A66 text on black | 1.90:1 | Fails | Lc -8.0 | 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
#FBF2FA
oklch(97% 0.014 329.1)
-
Step 100
100
#F6E3F5
oklch(93.6% 0.031 327.4)
-
Step 200
200
#EFCCED
oklch(88.5% 0.058 327.9)
-
Step 300
300
#E6A8E4
oklch(80.9% 0.107 327.6)
-
Step 400
400
#D876D6
oklch(70.8% 0.17 327.9)
-
Step 500
500
#CB4ACA
oklch(63.1% 0.218 328.1)
-
Step 600
600
#B620B7
oklch(55.6% 0.237 327.9)
-
Step 700
700
#9C0B9E
oklch(49% 0.221 327.6)
-
Step 800
800
#7F1380
oklch(42.7% 0.182 327.8)
-
Step 900
900 (this color)
#661A66
oklch(37.5% 0.142 328)
-
Step 950
950
#3C123C
oklch(27% 0.089 327.7)
#661A66 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) | #0D3668 | 0.151 |
| Deuteranopia (no green cones) | #2E3F64 | 0.127 |
| Tritanopia (no blue cones) | #69253E | 0.079 |
| Achromatopsia (no color) | #3C3C3C | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661A66
#661A66
oklch(37.5% 0.142 328)
- #00501B
#00501B
oklch(37.6% 0.109 147.8)
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 #661A66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.040
- Grape Purple #5D1451 ΔE 0.041
- Velvet #750851 ΔE 0.050
- Purple #800080 ΔE 0.069
- Plum Purple #4E0550 ΔE 0.073
- Royal Purple #4B006E ΔE 0.076
- Red Purple #820747 ΔE 0.082
- Merlot #730039 ΔE 0.082
Use #661A66 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.