#66577A
Closest named color: Dusty Grape (#545775). oklch(48.5% 0.058 303.9), rgb(102, 87, 122).
Aa
White text reads best on this color (6.54:1).
About this color
#66577A is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.058 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.030 away. White text reads best on it, at 6.54:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #66577A |
| RGB | rgb(102, 87, 122) |
| HSL | hsl(266, 17%, 41%) |
| OKLCH | oklch(48.5% 0.058 303.9) |
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 #66577A | 6.54:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #66577A | 3.20:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #66577A text on white | 6.54:1 | AA | Lc 82.4 | Fine for body text |
| #66577A text on black | 3.20:1 | AA large text | Lc -19.5 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9EE
oklch(93.7% 0.007 304.2)
-
Step 200
200
#DBD7E2
oklch(88.6% 0.016 302.5)
-
Step 300
300
#C4BCD0
oklch(80.8% 0.029 303.8)
-
Step 400
400
#A69AB8
oklch(70.6% 0.045 303.4)
-
Step 500
500
#9181A6
oklch(63.1% 0.057 304.5)
-
Step 600
600
#7B6A91
oklch(55.5% 0.062 304.3)
-
Step 700
700 (this color)
#66577A
oklch(48.5% 0.058 303.9)
-
Step 800
800
#554965
oklch(42.9% 0.048 304)
-
Step 900
900
#463D52
oklch(37.8% 0.037 304.2)
-
Step 950
950
#292430
oklch(27.1% 0.023 303.9)
#66577A 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) | #505D7B | 0.036 |
| Deuteranopia (no green cones) | #535D79 | 0.033 |
| Tritanopia (no blue cones) | #635C63 | 0.045 |
| Achromatopsia (no color) | #5D5D5D | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66577A
#66577A
oklch(48.5% 0.058 303.9)
- #586540
#586540
oklch(48.6% 0.058 124.3)
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 #66577A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.030
- Dusk #4E5481 ΔE 0.042
- Muted Purple #805B87 ΔE 0.051
- Dull Purple #84597E ΔE 0.053
- Twilight #4E518B ΔE 0.054
- Slate #516572 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.056
- Dusty Purple #825F87 ΔE 0.057
Use #66577A 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.