#645B74
Closest named color: Dusty Grape (#545775). oklch(48.9% 0.041 301.3), rgb(100, 91, 116).
Aa
White text reads best on this color (6.38:1).
About this color
#645B74 is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.041 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.029 away. White text reads best on it, at 6.38:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.29:1 |
| White text | 6.38:1 |
Values
| HEX | #645B74 |
| RGB | rgb(100, 91, 116) |
| HSL | hsl(262, 12%, 41%) |
| OKLCH | oklch(48.9% 0.041 301.3) |
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 #645B74 | 6.38:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #645B74 | 3.29:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #645B74 text on white | 6.38:1 | AA | Lc 81.7 | Fine for body text |
| #645B74 text on black | 3.29:1 | AA large text | Lc -20.2 | 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
#EAE9ED
oklch(93.6% 0.005 297.7)
-
Step 200
200
#DAD7DF
oklch(88.4% 0.011 303.1)
-
Step 300
300
#C3BECC
oklch(81% 0.02 302.1)
-
Step 400
400
#A49CB2
oklch(70.7% 0.033 302.1)
-
Step 500
500
#8D849F
oklch(63.1% 0.041 300.4)
-
Step 600
600
#786E89
oklch(55.7% 0.043 301.9)
-
Step 700
700 (this color)
#645B74
oklch(48.9% 0.041 301.3)
-
Step 800
800
#524B5F
oklch(42.7% 0.034 301)
-
Step 900
900
#443E4E
oklch(37.6% 0.028 302.2)
-
Step 950
950
#28252D
oklch(27.1% 0.015 302.4)
#645B74 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) | #565F75 | 0.023 |
| Deuteranopia (no green cones) | #585F73 | 0.021 |
| Tritanopia (no blue cones) | #615E63 | 0.032 |
| Achromatopsia (no color) | #5F5F5F | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645B74
#645B74
oklch(48.9% 0.041 301.3)
- #5C644A
#5C644A
oklch(48.9% 0.041 121.8)
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 #645B74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.029
- Slate #516572 ΔE 0.040
- Dusk #4E5481 ΔE 0.049
- YInMn Blue #415A77 ΔE 0.052
- Dim Gray #696969 ΔE 0.052
- Muted Purple #805B87 ΔE 0.058
- Dull Purple #84597E ΔE 0.058
- Dusty Purple #825F87 ΔE 0.061
Use #645B74 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.