#645B76
Closest named color: Dusty Grape (#545775). oklch(49% 0.044 300), rgb(100, 91, 118).
Aa
White text reads best on this color (6.36:1).
About this color
#645B76 is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.044 and its hue 300°. 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 6.36:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #645B76 |
| RGB | rgb(100, 91, 118) |
| HSL | hsl(260, 13%, 41%) |
| OKLCH | oklch(49% 0.044 300) |
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 #645B76 | 6.36:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #645B76 | 3.29:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #645B76 text on white | 6.36:1 | AA | Lc 81.7 | Fine for body text |
| #645B76 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
#DAD7E0
oklch(88.4% 0.013 301.3)
-
Step 300
300
#C2BECD
oklch(80.9% 0.021 298.1)
-
Step 400
400
#A39CB3
oklch(70.6% 0.034 299.4)
-
Step 500
500
#8D84A0
oklch(63.1% 0.043 299.9)
-
Step 600
600
#776D8B
oklch(55.5% 0.047 300.1)
-
Step 700
700 (this color)
#645B76
oklch(49% 0.044 300)
-
Step 800
800
#524B60
oklch(42.8% 0.035 300.2)
-
Step 900
900
#443E4F
oklch(37.7% 0.03 301.1)
-
Step 950
950
#28252E
oklch(27.2% 0.017 300.5)
#645B76 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) | #565F77 | 0.023 |
| Deuteranopia (no green cones) | #575F75 | 0.023 |
| Tritanopia (no blue cones) | #615F64 | 0.036 |
| Achromatopsia (no color) | #5F5F5F | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645B76
#645B76
oklch(49% 0.044 300)
- #5D6448
#5D6448
oklch(48.9% 0.044 119.4)
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 #645B76, 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 0.041
- Dusk #4E5481 ΔE 0.047
- YInMn Blue #415A77 ΔE 0.052
- Dim Gray #696969 ΔE 0.054
- Muted Purple #805B87 ΔE 0.056
- Dull Purple #84597E ΔE 0.057
- Dusty Purple #825F87 ΔE 0.059
Use #645B76 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.