#661B6D
Closest named color: Rich Purple (#720058). oklch(38% 0.147 324.2), rgb(102, 27, 109).
Aa
White text reads best on this color (10.81:1).
About this color
#661B6D is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.147 and its hue 324°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Purple (#720058), ΔE 0.048 away. White text reads best on it, at 10.81:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.94:1 |
| White text | 10.81:1 |
Values
| HEX | #661B6D |
| RGB | rgb(102, 27, 109) |
| HSL | hsl(295, 60%, 27%) |
| OKLCH | oklch(38% 0.147 324.2) |
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 #661B6D | 10.81:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #661B6D | 1.94:1 | Fails | Lc 9.8 | Not readable |
| #661B6D text on white | 10.81:1 | AAA | Lc 94.1 | Preferred for body text |
| #661B6D text on black | 1.94:1 | Fails | Lc -8.5 | 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
#F5E3F6
oklch(93.6% 0.032 324.2)
-
Step 200
200
#EECCF0
oklch(88.5% 0.061 324.3)
-
Step 300
300
#E4A8E9
oklch(80.9% 0.11 323.9)
-
Step 400
400
#D575DD
oklch(70.6% 0.177 324.4)
-
Step 500
500
#C849D4
oklch(63.1% 0.226 324.2)
-
Step 600
600
#B31DC1
oklch(55.6% 0.245 324.1)
-
Step 700
700
#9A05A6
oklch(49.1% 0.228 324.4)
-
Step 800
800
#7D1087
oklch(42.7% 0.189 324.1)
-
Step 900
900 (this color)
#661B6D
oklch(38% 0.147 324.2)
-
Step 950
950
#3B113F
oklch(26.9% 0.093 324.1)
#661B6D 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) | #01386F | 0.155 |
| Deuteranopia (no green cones) | #2A406B | 0.130 |
| Tritanopia (no blue cones) | #682942 | 0.086 |
| Achromatopsia (no color) | #3D3D3D | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661B6D
#661B6D
oklch(38% 0.147 324.2)
- #00520D
#00520D
oklch(38.1% 0.122 144.3)
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 #661B6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.048
- Grape Purple #5D1451 ΔE 0.052
- Velvet #750851 ΔE 0.059
- Purple #800080 ΔE 0.063
- Royal Purple #4B006E ΔE 0.074
- Plum Purple #4E0550 ΔE 0.079
- Indigo #4B0082 ΔE 0.082
- Rebecca Purple #663399 ΔE 0.083
Use #661B6D 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.