#665B78
Closest named color: Dusty Grape (#545775). oklch(49.3% 0.047 302), rgb(102, 91, 120).
Aa
White text reads best on this color (6.30:1).
About this color
#665B78 is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.047 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.032 away. White text reads best on it, at 6.30:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.047) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #665B78 |
| RGB | rgb(102, 91, 120) |
| HSL | hsl(263, 14%, 41%) |
| OKLCH | oklch(49.3% 0.047 302) |
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 #665B78 | 6.30:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #665B78 | 3.33:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #665B78 text on white | 6.30:1 | AA | Lc 81.4 | Fine for body text |
| #665B78 text on black | 3.33:1 | AA large text | Lc -20.5 | 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
#EAE9EE
oklch(93.6% 0.007 295.4)
-
Step 200
200
#DAD7E0
oklch(88.4% 0.013 301.3)
-
Step 300
300
#C3BDCD
oklch(80.8% 0.023 302.9)
-
Step 400
400
#A59CB4
oklch(70.8% 0.036 302.5)
-
Step 500
500
#8E83A2
oklch(63% 0.047 301.2)
-
Step 600
600
#796D8D
oklch(55.8% 0.051 301.9)
-
Step 700
700 (this color)
#665B78
oklch(49.3% 0.047 302)
-
Step 800
800
#534A61
oklch(42.7% 0.039 302.6)
-
Step 900
900
#443E4F
oklch(37.7% 0.03 301.1)
-
Step 950
950
#28242E
oklch(26.9% 0.019 303.3)
#665B78 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) | #556079 | 0.028 |
| Deuteranopia (no green cones) | #576077 | 0.027 |
| Tritanopia (no blue cones) | #635F65 | 0.037 |
| Achromatopsia (no color) | #606060 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B78
#665B78
oklch(49.3% 0.047 302)
- #5C6647
#5C6647
oklch(49.3% 0.049 122.7)
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 #665B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.032
- Slate #516572 ΔE 0.045
- Dusk #4E5481 ΔE 0.049
- Muted Purple #805B87 ΔE 0.051
- Dull Purple #84597E ΔE 0.053
- Dusty Purple #825F87 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.055
- Dim Gray #696969 ΔE 0.055
Use #665B78 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.