#66447E
Closest named color: Twilight (#4E518B). oklch(45% 0.099 310), rgb(102, 68, 126).
Aa
White text reads best on this color (7.79:1).
About this color
#66447E is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.099 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.051 away. White text reads best on it, at 7.79:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #66447E |
| RGB | rgb(102, 68, 126) |
| HSL | hsl(275, 30%, 38%) |
| OKLCH | oklch(45% 0.099 310) |
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 #66447E | 7.79:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #66447E | 2.69:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #66447E text on white | 7.79:1 | AAA | Lc 86.9 | Fine for body text |
| #66447E text on black | 2.69:1 | Fails | Lc -15.2 | 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 800.
-
Step 50
50
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F2
oklch(93.6% 0.016 310.1)
-
Step 200
200
#E0D4E9
oklch(88.6% 0.031 311)
-
Step 300
300
#CCB7DD
oklch(80.9% 0.057 309.9)
-
Step 400
400
#B290CC
oklch(70.6% 0.093 309.9)
-
Step 500
500
#9F74BF
oklch(63.1% 0.119 309.7)
-
Step 600
600
#8A5BAB
oklch(55.5% 0.129 309.9)
-
Step 700
700
#754B93
oklch(49.1% 0.119 309.6)
-
Step 800
800 (this color)
#66447E
oklch(45% 0.099 310)
-
Step 900
900
#4E3560
oklch(37.7% 0.077 309.9)
-
Step 950
950
#2E1F38
oklch(27% 0.049 310.9)
#66447E 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) | #375180 | 0.077 |
| Deuteranopia (no green cones) | #40537C | 0.071 |
| Tritanopia (no blue cones) | #634D5B | 0.070 |
| Achromatopsia (no color) | #525252 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66447E
#66447E
oklch(45% 0.099 310)
- #43601E
#43601E
oklch(45.1% 0.099 129.9)
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 #66447E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.051
- Dusk #4E5481 ΔE 0.055
- Rebecca Purple #663399 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.064
- Dusty Grape #545775 ΔE 0.064
- Light Eggplant #894585 ΔE 0.067
- Blueberry #464196 ΔE 0.070
- Muted Purple #805B87 ΔE 0.081
Use #66447E 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.