#666189
Closest named color: Muted Purple (#805B87). oklch(51.3% 0.063 289.7), rgb(102, 97, 137).
Aa
White text reads best on this color (5.77:1).
About this color
#666189 is a medium-dark, muted purple. In OKLCH its lightness is 51%, its chroma 0.063 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Purple (#805B87), ΔE 0.044 away. White text reads best on it, at 5.77:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Muted Purple (#805B87) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #666189 |
| RGB | rgb(102, 97, 137) |
| HSL | hsl(248, 17%, 46%) |
| OKLCH | oklch(51.3% 0.063 289.7) |
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 #666189 | 5.77:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #666189 | 3.63:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #666189 text on white | 5.77:1 | AA | Lc 78.9 | Fine for body text |
| #666189 text on black | 3.63:1 | AA large text | Lc -22.9 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D8D7E4
oklch(88.4% 0.018 289.6)
-
Step 300
300
#C0BED3
oklch(81% 0.029 290.1)
-
Step 400
400
#9F9CBE
oklch(70.7% 0.049 289.1)
-
Step 500
500
#8883AD
oklch(63% 0.063 289.9)
-
Step 600
600
#726D99
oklch(55.7% 0.068 289.2)
-
Step 700
700 (this color)
#666189
oklch(51.3% 0.063 289.7)
-
Step 800
800
#4E4A6A
oklch(42.6% 0.053 289.7)
-
Step 900
900
#413E56
oklch(37.7% 0.041 290)
-
Step 950
950
#262432
oklch(26.9% 0.026 291.1)
#666189 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) | #57668B | 0.024 |
| Deuteranopia (no green cones) | #576588 | 0.024 |
| Tritanopia (no blue cones) | #5E686F | 0.054 |
| Achromatopsia (no color) | #666666 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666189
#666189
oklch(51.3% 0.063 289.7)
- #696A3F
#696A3F
oklch(51.2% 0.062 109.6)
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 #666189, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Purple #805B87 ΔE 0.044
- Dusty Purple #825F87 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.048
- Dusty Grape #545775 ΔE 0.050
- Dull Purple #84597E ΔE 0.053
- Slate #516572 ΔE 0.054
- Dusk #4E5481 ΔE 0.056
- Metallic Blue #4F738E ΔE 0.056
Use #666189 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.