#661F64
Closest named color: Grape Purple (#5D1451). oklch(37.9% 0.134 329), rgb(102, 31, 100).
Aa
White text reads best on this color (10.79:1).
About this color
#661F64 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.134 and its hue 329°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.041 away. White text reads best on it, at 10.79:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.94:1 |
| White text | 10.79:1 |
Values
| HEX | #661F64 |
| RGB | rgb(102, 31, 100) |
| HSL | hsl(302, 53%, 26%) |
| OKLCH | oklch(37.9% 0.134 329) |
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 #661F64 | 10.79:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #661F64 | 1.94:1 | Fails | Lc 9.7 | Not readable |
| #661F64 text on white | 10.79:1 | AAA | Lc 94.2 | Preferred for body text |
| #661F64 text on black | 1.94:1 | Fails | Lc -8.3 | 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
#F5E3F4
oklch(93.5% 0.03 327.5)
-
Step 200
200
#EFCDEC
oklch(88.6% 0.056 328.9)
-
Step 300
300
#E5A9E1
oklch(80.8% 0.101 328.7)
-
Step 400
400
#D678D1
oklch(70.6% 0.161 329.1)
-
Step 500
500
#C950C5
oklch(63.2% 0.205 329)
-
Step 600
600
#B42BB1
oklch(55.6% 0.222 329)
-
Step 700
700
#9B1A98
oklch(49.1% 0.207 329.3)
-
Step 800
800
#7E1A7C
oklch(42.8% 0.173 329)
-
Step 900
900 (this color)
#661F64
oklch(37.9% 0.134 329)
-
Step 950
950
#3C133A
oklch(27% 0.086 329.6)
#661F64 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) | #173766 | 0.140 |
| Deuteranopia (no green cones) | #324162 | 0.120 |
| Tritanopia (no blue cones) | #6A283E | 0.075 |
| Achromatopsia (no color) | #3D3D3D | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661F64
#661F64
oklch(37.9% 0.134 329)
- #00511F
#00511F
oklch(38% 0.107 149)
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 #661F64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.041
- Rich Purple #720058 ΔE 0.042
- Velvet #750851 ΔE 0.048
- Purple #800080 ΔE 0.073
- Plum Purple #4E0550 ΔE 0.076
- Red Purple #820747 ΔE 0.078
- Merlot #730039 ΔE 0.079
- Royal Purple #4B006E ΔE 0.082
Use #661F64 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.