#66448E
Closest named color: Rebecca Purple (#663399). oklch(45.9% 0.12 303.2), rgb(102, 68, 142).
Aa
White text reads best on this color (7.54:1).
About this color
#66448E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.120 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.044 away. White text reads best on it, at 7.54:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.78:1 |
| White text | 7.54:1 |
Values
| HEX | #66448E |
| RGB | rgb(102, 68, 142) |
| HSL | hsl(268, 35%, 41%) |
| OKLCH | oklch(45.9% 0.12 303.2) |
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 #66448E | 7.54:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #66448E | 2.78:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #66448E text on white | 7.54:1 | AAA | Lc 86.0 | Fine for body text |
| #66448E text on black | 2.78:1 | Fails | Lc -16.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DDD4EB
oklch(88.4% 0.033 303.4)
-
Step 300
300
#C8B8E0
oklch(80.9% 0.058 303.3)
-
Step 400
400
#AC92D1
oklch(70.6% 0.094 303)
-
Step 500
500
#9876C4
oklch(63% 0.119 303.2)
-
Step 600
600
#835EB1
oklch(55.6% 0.129 303)
-
Step 700
700 (this color)
#66448E
oklch(45.9% 0.12 303.2)
-
Step 800
800
#5A407B
oklch(42.7% 0.098 302.8)
-
Step 900
900
#4A3663
oklch(37.6% 0.078 303.4)
-
Step 950
950
#2B203A
oklch(26.9% 0.049 302.7)
#66448E 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) | #2C5391 | 0.088 |
| Deuteranopia (no green cones) | #36548C | 0.080 |
| Tritanopia (no blue cones) | #5F5162 | 0.090 |
| Achromatopsia (no color) | #545454 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66448E
#66448E
oklch(45.9% 0.12 303.2)
- #4C6100
#4C6100
oklch(45.9% 0.113 123.1)
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 #66448E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.044
- Twilight #4E518B ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.058
- Blueberry #464196 ΔE 0.059
- Dusk #4E5481 ΔE 0.063
- Light Eggplant #894585 ΔE 0.069
- Dusty Grape #545775 ΔE 0.078
- Dusky Blue #475F94 ΔE 0.081
Use #66448E 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.