#665A89
Closest named color: Dusk (#4E5481). oklch(49.9% 0.075 295.3), rgb(102, 90, 137).
Aa
White text reads best on this color (6.19:1).
About this color
#665A89 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.075 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.044 away. White text reads best on it, at 6.19:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.38:1 |
| White text | 6.19:1 |
Values
| HEX | #665A89 |
| RGB | rgb(102, 90, 137) |
| HSL | hsl(255, 21%, 45%) |
| OKLCH | oklch(49.9% 0.075 295.3) |
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 #665A89 | 6.19:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #665A89 | 3.38:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #665A89 text on white | 6.19:1 | AA | Lc 80.9 | Fine for body text |
| #665A89 text on black | 3.38:1 | AA large text | Lc -21.0 | 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
#EAE9F0
oklch(93.7% 0.009 292.8)
-
Step 200
200
#DAD7E5
oklch(88.6% 0.019 295.8)
-
Step 300
300
#C2BCD6
oklch(80.8% 0.037 296.1)
-
Step 400
400
#A39AC1
oklch(70.7% 0.057 295.5)
-
Step 500
500
#8D81B2
oklch(63.2% 0.074 295.5)
-
Step 600
600
#776A9E
oklch(55.7% 0.08 295.1)
-
Step 700
700 (this color)
#665A89
oklch(49.9% 0.075 295.3)
-
Step 800
800
#51486D
oklch(42.6% 0.061 294.8)
-
Step 900
900
#433C59
oklch(37.6% 0.05 295)
-
Step 950
950
#272334
oklch(26.8% 0.032 295)
#665A89 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) | #4E618B | 0.038 |
| Deuteranopia (no green cones) | #506088 | 0.036 |
| Tritanopia (no blue cones) | #5F626B | 0.062 |
| Achromatopsia (no color) | #616161 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665A89
#665A89
oklch(49.9% 0.075 295.3)
- #616834
#616834
oklch(49.9% 0.075 115.5)
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 #665A89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.044
- Dusty Grape #545775 ΔE 0.045
- Muted Purple #805B87 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.047
- Twilight #4E518B ΔE 0.049
- Dusty Purple #825F87 ΔE 0.051
- Dull Purple #84597E ΔE 0.053
- Denim #3B638C ΔE 0.060
Use #665A89 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.