#666199
Closest named color: Dusky Blue (#475F94). oklch(52.1% 0.087 287), rgb(102, 97, 153).
Aa
White text reads best on this color (5.62:1).
About this color
#666199 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.087 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.046 away. White text reads best on it, at 5.62:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #666199 |
| RGB | rgb(102, 97, 153) |
| HSL | hsl(245, 22%, 49%) |
| OKLCH | oklch(52.1% 0.087 287) |
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 #666199 | 5.62:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #666199 | 3.73:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #666199 text on white | 5.62:1 | AA | Lc 78.1 | Fine for body text |
| #666199 text on black | 3.73:1 | AA large text | Lc -23.7 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D8D7E8
oklch(88.5% 0.023 288.6)
-
Step 300
300
#BEBDDB
oklch(80.9% 0.042 286.9)
-
Step 400
400
#9D9BC9
oklch(70.8% 0.067 286.6)
-
Step 500
500
#8681BB
oklch(63% 0.086 287.6)
-
Step 600
600
#706AA7
oklch(55.5% 0.094 287.4)
-
Step 700
700 (this color)
#666199
oklch(52.1% 0.087 287)
-
Step 800
800
#4C4875
oklch(42.6% 0.074 286.9)
-
Step 900
900
#3F3D5E
oklch(37.7% 0.056 286.2)
-
Step 950
950
#252437
oklch(27% 0.035 286.2)
#666199 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) | #50699B | 0.035 |
| Deuteranopia (no green cones) | #4F6698 | 0.034 |
| Tritanopia (no blue cones) | #596B76 | 0.074 |
| Achromatopsia (no color) | #676767 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666199
#666199
oklch(52.1% 0.087 287)
- #6F6D2B
#6F6D2B
oklch(52.2% 0.088 107.5)
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 #666199, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.046
- Muted Purple #805B87 ΔE 0.050
- Dusty Purple #825F87 ΔE 0.053
- French Blue #436BAD ΔE 0.054
- Dark Lavender #856798 ΔE 0.055
- Denim #3B638C ΔE 0.062
- Twilight #4E518B ΔE 0.063
- Dull Purple #84597E ΔE 0.063
Use #666199 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.