#66328D
Closest named color: Rebecca Purple (#663399). oklch(43% 0.148 307.6), rgb(102, 50, 141).
Aa
White text reads best on this color (8.72:1).
About this color
#66328D is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.148 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.020 away. White text reads best on it, at 8.72:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #66328D |
| RGB | rgb(102, 50, 141) |
| HSL | hsl(274, 48%, 37%) |
| OKLCH | oklch(43% 0.148 307.6) |
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 #66328D | 8.72:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #66328D | 2.40:1 | Fails | Lc 14.6 | Not readable |
| #66328D text on white | 8.72:1 | AAA | Lc 89.4 | Fine for body text |
| #66328D text on black | 2.40:1 | Fails | Lc -12.8 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F7
oklch(93.6% 0.024 307)
-
Step 200
200
#E2D1F2
oklch(88.5% 0.048 308.5)
-
Step 300
300
#D0B2EC
oklch(80.9% 0.086 308)
-
Step 400
400
#B888E3
oklch(70.8% 0.138 307.5)
-
Step 500
500
#A766DB
oklch(63.1% 0.178 307.7)
-
Step 600
600
#924AC8
oklch(55.6% 0.192 307.6)
-
Step 700
700
#7C3AAD
oklch(49.1% 0.179 307.4)
-
Step 800
800 (this color)
#66328D
oklch(43% 0.148 307.6)
-
Step 900
900
#522D70
oklch(37.7% 0.115 307.3)
-
Step 950
950
#301B42
oklch(27% 0.073 307)
#66328D 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) | #004990 | 0.128 |
| Deuteranopia (no green cones) | #214B8B | 0.114 |
| Tritanopia (no blue cones) | #60445B | 0.103 |
| Achromatopsia (no color) | #4B4B4B | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66328D
#66328D
oklch(43% 0.148 307.6)
- #3E5A00
#3E5A00
oklch(42.9% 0.111 127.6)
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 #66328D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.020
- Dark Slate Blue #483D8B ΔE 0.058
- Blueberry #464196 ΔE 0.065
- Purple #800080 ΔE 0.077
- Grape #7209B7 ΔE 0.083
- Chrysanthemum #560BAD ΔE 0.084
- Twilight #4E518B ΔE 0.084
- Dark Magenta #8B008B ΔE 0.087
Use #66328D 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.