#661D64
Closest named color: Grape Purple (#5D1451). oklch(37.7% 0.137 329), rgb(102, 29, 100).
Aa
White text reads best on this color (10.91:1).
About this color
#661D64 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.137 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 0.040 away. White text reads best on it, at 10.91:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.92:1 |
| White text | 10.91:1 |
Values
| HEX | #661D64 |
| RGB | rgb(102, 29, 100) |
| HSL | hsl(302, 56%, 26%) |
| OKLCH | oklch(37.7% 0.137 329) |
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 #661D64 | 10.91:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #661D64 | 1.92:1 | Fails | Lc 9.5 | Not readable |
| #661D64 text on white | 10.91:1 | AAA | Lc 94.4 | Preferred for body text |
| #661D64 text on black | 1.92:1 | Fails | Lc -8.2 | 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
#F6E3F4
oklch(93.6% 0.03 329.1)
-
Step 200
200
#EFCCEC
oklch(88.4% 0.057 328.8)
-
Step 300
300
#E6A9E1
oklch(80.9% 0.102 329.3)
-
Step 400
400
#D777D2
oklch(70.7% 0.164 329.1)
-
Step 500
500
#CA4EC6
oklch(63.1% 0.209 329)
-
Step 600
600
#B527B2
oklch(55.5% 0.227 329.1)
-
Step 700
700
#9C1699
oklch(49.2% 0.211 329.3)
-
Step 800
800
#7E187C
oklch(42.6% 0.175 329)
-
Step 900
900 (this color)
#661D64
oklch(37.7% 0.137 329)
-
Step 950
950
#3C133B
oklch(27% 0.087 328.6)
#661D64 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) | #143666 | 0.144 |
| Deuteranopia (no green cones) | #314062 | 0.122 |
| Tritanopia (no blue cones) | #6A263E | 0.074 |
| Achromatopsia (no color) | #3D3D3D | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661D64
#661D64
oklch(37.7% 0.137 329)
- #00501E
#00501E
oklch(37.6% 0.107 148.8)
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 #661D64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.040
- Rich Purple #720058 ΔE 0.040
- Velvet #750851 ΔE 0.048
- Purple #800080 ΔE 0.072
- Plum Purple #4E0550 ΔE 0.074
- Red Purple #820747 ΔE 0.078
- Merlot #730039 ΔE 0.079
- Royal Purple #4B006E ΔE 0.080
Use #661D64 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.