#645D7B
Closest named color: Dusty Grape (#545775). oklch(49.6% 0.048 295.3), rgb(100, 93, 123).
Aa
White text reads best on this color (6.18:1).
About this color
#645D7B is a medium-dark, muted purple. In OKLCH its lightness is 50%, its chroma 0.048 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.033 away. White text reads best on it, at 6.18:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #645D7B |
| RGB | rgb(100, 93, 123) |
| HSL | hsl(254, 14%, 42%) |
| OKLCH | oklch(49.6% 0.048 295.3) |
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 #645D7B | 6.18:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #645D7B | 3.39:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #645D7B text on white | 6.18:1 | AA | Lc 80.9 | Fine for body text |
| #645D7B text on black | 3.39:1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#EAE9EE
oklch(93.6% 0.007 295.4)
-
Step 200
200
#D9D8E1
oklch(88.6% 0.012 291.3)
-
Step 300
300
#C1BECE
oklch(80.9% 0.022 294.5)
-
Step 400
400
#A29CB6
oklch(70.6% 0.038 296)
-
Step 500
500
#8B84A4
oklch(63.1% 0.048 295)
-
Step 600
600
#756E8F
oklch(55.7% 0.051 294.4)
-
Step 700
700 (this color)
#645D7B
oklch(49.6% 0.048 295.3)
-
Step 800
800
#504B63
oklch(42.7% 0.04 294.2)
-
Step 900
900
#433E51
oklch(37.7% 0.033 296.9)
-
Step 950
950
#27252F
oklch(27.1% 0.019 294.3)
#645D7B 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) | #56617C | 0.023 |
| Deuteranopia (no green cones) | #57617A | 0.022 |
| Tritanopia (no blue cones) | #606267 | 0.041 |
| Achromatopsia (no color) | #616161 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645D7B
#645D7B
oklch(49.6% 0.048 295.3)
- #616646
#616646
oklch(49.7% 0.048 115.4)
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 #645D7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.033
- Slate #516572 ΔE 0.041
- Dusk #4E5481 ΔE 0.048
- Muted Purple #805B87 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.053
- Dim Gray #696969 ΔE 0.054
- Dusty Purple #825F87 ΔE 0.055
- Dull Purple #84597E ΔE 0.055
Use #645D7B 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.