#66356E
Closest named color: Rebecca Purple (#663399). oklch(41.5% 0.107 321.8), rgb(102, 53, 110).
Aa
White text reads best on this color (9.13:1).
About this color
#66356E is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.107 and its hue 322°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.072 away. White text reads best on it, at 9.13:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.29:1 |
| White text | 9.13:1 |
Values
| HEX | #66356E |
| RGB | rgb(102, 53, 110) |
| HSL | hsl(292, 35%, 32%) |
| OKLCH | oklch(41.5% 0.107 321.8) |
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 #66356E | 9.13:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #66356E | 2.29:1 | Fails | Lc 13.3 | Not readable |
| #66356E text on white | 9.13:1 | AAA | Lc 90.7 | Preferred for body text |
| #66356E text on black | 2.29:1 | Fails | Lc -11.6 | 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 800.
-
Step 50
50
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#F0E6F1
oklch(93.6% 0.018 323)
-
Step 200
200
#E4D2E7
oklch(88.5% 0.034 321.4)
-
Step 300
300
#D4B4D9
oklch(80.9% 0.062 321.7)
-
Step 400
400
#BE8BC6
oklch(70.6% 0.101 321.9)
-
Step 500
500
#AD6DB7
oklch(63% 0.129 322)
-
Step 600
600
#9854A3
oklch(55.6% 0.139 321.9)
-
Step 700
700
#82448C
oklch(49.2% 0.13 321.9)
-
Step 800
800 (this color)
#66356E
oklch(41.5% 0.107 321.8)
-
Step 900
900
#56315C
oklch(37.7% 0.084 321.8)
-
Step 950
950
#321D36
oklch(26.9% 0.053 321)
#66356E 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) | #2D4570 | 0.100 |
| Deuteranopia (no green cones) | #3B4A6C | 0.089 |
| Tritanopia (no blue cones) | #673C4C | 0.066 |
| Achromatopsia (no color) | #484848 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66356E
#66356E
oklch(41.5% 0.107 321.8)
- #245A1E
#245A1E
oklch(41.7% 0.108 141.7)
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 #66356E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.072
- Dark Slate Blue #483D8B ΔE 0.073
- Brownish Purple #76424E ΔE 0.080
- Velvet #750851 ΔE 0.081
- Grape Purple #5D1451 ΔE 0.081
- Rich Purple #720058 ΔE 0.082
- Purple Brown #673A3F ΔE 0.084
- Twilight #4E518B ΔE 0.086
Use #66356E 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.