#66507A
Closest named color: Dusty Grape (#545775). oklch(47.1% 0.071 307.8), rgb(102, 80, 122).
Aa
White text reads best on this color (7.01:1).
About this color
#66507A is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.071 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.036 away. White text reads best on it, at 7.01:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.071) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #66507A |
| RGB | rgb(102, 80, 122) |
| HSL | hsl(271, 21%, 40%) |
| OKLCH | oklch(47.1% 0.071 307.8) |
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 #66507A | 7.01:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #66507A | 2.99:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #66507A text on white | 7.01:1 | AAA | Lc 84.3 | Fine for body text |
| #66507A text on black | 2.99:1 | Fails | Lc -17.7 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DCD6E3
oklch(88.5% 0.019 306.6)
-
Step 300
300
#C7BBD2
oklch(80.9% 0.034 308.9)
-
Step 400
400
#AA98BC
oklch(70.7% 0.055 307.6)
-
Step 500
500
#957EAB
oklch(63% 0.071 307.7)
-
Step 600
600
#806796
oklch(55.6% 0.077 308.3)
-
Step 700
700 (this color)
#66507A
oklch(47.1% 0.071 307.8)
-
Step 800
800
#584668
oklch(42.7% 0.059 308.2)
-
Step 900
900
#483B55
oklch(37.7% 0.046 307.1)
-
Step 950
950
#2A2332
oklch(27.1% 0.029 305.8)
#66507A 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) | #48587C | 0.049 |
| Deuteranopia (no green cones) | #4D5979 | 0.045 |
| Tritanopia (no blue cones) | #63565F | 0.053 |
| Achromatopsia (no color) | #595959 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66507A
#66507A
oklch(47.1% 0.071 307.8)
- #4F6336
#4F6336
oklch(47.1% 0.072 128.4)
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 #66507A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.036
- Dusk #4E5481 ΔE 0.039
- Twilight #4E518B ΔE 0.047
- Muted Purple #805B87 ΔE 0.059
- Dull Purple #84597E ΔE 0.061
- YInMn Blue #415A77 ΔE 0.061
- Dusky Blue #475F94 ΔE 0.065
- Dusty Purple #825F87 ΔE 0.068
Use #66507A 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.