#665B74
Closest named color: Dusty Grape (#545775). oklch(49.1% 0.041 304.9), rgb(102, 91, 116).
Aa
White text reads best on this color (6.33:1).
About this color
#665B74 is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.041 and its hue 305°. 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 6.33:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #665B74 |
| RGB | rgb(102, 91, 116) |
| HSL | hsl(266, 12%, 41%) |
| OKLCH | oklch(49.1% 0.041 304.9) |
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 #665B74 | 6.33:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #665B74 | 3.31:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #665B74 text on white | 6.33:1 | AA | Lc 81.5 | Fine for body text |
| #665B74 text on black | 3.31:1 | AA large text | Lc -20.3 | 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
#EBE9ED
oklch(93.7% 0.006 308.4)
-
Step 200
200
#DBD7DF
oklch(88.5% 0.012 308.3)
-
Step 300
300
#C3BECB
oklch(80.9% 0.019 303.4)
-
Step 400
400
#A59CB1
oklch(70.7% 0.032 304.9)
-
Step 500
500
#8F849E
oklch(63.2% 0.04 304.4)
-
Step 600
600
#796D89
oklch(55.6% 0.045 304.5)
-
Step 700
700 (this color)
#665B74
oklch(49.1% 0.041 304.9)
-
Step 800
800
#534A5E
oklch(42.6% 0.034 305.4)
-
Step 900
900
#453E4D
oklch(37.7% 0.027 306.2)
-
Step 950
950
#28242D
oklch(26.9% 0.017 305.4)
#665B74 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) | #575F75 | 0.025 |
| Deuteranopia (no green cones) | #596073 | 0.024 |
| Tritanopia (no blue cones) | #645E63 | 0.032 |
| Achromatopsia (no color) | #5F5F5F | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B74
#665B74
oklch(49.1% 0.041 304.9)
- #5B654B
#5B654B
oklch(49.1% 0.042 125)
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 #665B74, 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 0.042
- Dim Gray #696969 ΔE 0.051
- Dusk #4E5481 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.055
- Dull Purple #84597E ΔE 0.055
- Muted Purple #805B87 ΔE 0.055
- Dusty Purple #825F87 ΔE 0.058
Use #665B74 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.