#66658E
Closest named color: Dusty Purple (#825F87). oklch(52.4% 0.064 285.1), rgb(102, 101, 142).
Aa
White text reads best on this color (5.50:1).
About this color
#66658E is a medium-dark, muted purple. In OKLCH its lightness is 52%, its chroma 0.064 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Purple (#825F87), ΔE 0.046 away. White text reads best on it, at 5.50:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusty Purple (#825F87) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #66658E |
| RGB | rgb(102, 101, 142) |
| HSL | hsl(241, 17%, 48%) |
| OKLCH | oklch(52.4% 0.064 285.1) |
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 #66658E | 5.50:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #66658E | 3.81:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #66658E text on white | 5.50:1 | AA | Lc 77.5 | Fine for body text |
| #66658E text on black | 3.81:1 | AA large text | Lc -24.3 | 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 600.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D8D8E4
oklch(88.6% 0.016 286.1)
-
Step 300
300
#BEBED3
oklch(80.8% 0.029 285.7)
-
Step 400
400
#9D9DBD
oklch(70.7% 0.046 285.2)
-
Step 500
500
#8585AC
oklch(63.1% 0.058 284.6)
-
Step 600
600 (this color)
#66658E
oklch(52.4% 0.064 285.1)
-
Step 700
700
#5D5C82
oklch(49.1% 0.06 285.2)
-
Step 800
800
#4C4B69
oklch(42.6% 0.049 285.6)
-
Step 900
900
#3F3F55
oklch(37.7% 0.037 284.5)
-
Step 950
950
#252532
oklch(27% 0.024 284.7)
#66658E 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) | #5A6A90 | 0.021 |
| Deuteranopia (no green cones) | #59688D | 0.020 |
| Tritanopia (no blue cones) | #5D6C73 | 0.056 |
| Achromatopsia (no color) | #696969 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66658E
#66658E
oklch(52.4% 0.064 285.1)
- #6F6C40
#6F6C40
oklch(52.3% 0.063 105)
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 #66658E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Purple #825F87 ΔE 0.046
- Muted Purple #805B87 ΔE 0.047
- Metallic Blue #4F738E ΔE 0.048
- Dusky Blue #475F94 ΔE 0.050
- Grey Purple #826D8C ΔE 0.052
- Dark Lavender #856798 ΔE 0.053
- Dull Blue #49759C ΔE 0.054
- Slate #516572 ΔE 0.057
Use #66658E 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.