#645E79
Closest named color: Dusty Grape (#545775). oklch(49.8% 0.043 295), rgb(100, 94, 121).
Aa
White text reads best on this color (6.14:1).
About this color
#645E79 is a medium-dark, muted purple. In OKLCH its lightness is 50%, its chroma 0.043 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 0.034 away. White text reads best on it, at 6.14:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #645E79 |
| RGB | rgb(100, 94, 121) |
| HSL | hsl(253, 13%, 42%) |
| OKLCH | oklch(49.8% 0.043 295) |
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 #645E79 | 6.14:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #645E79 | 3.41:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #645E79 text on white | 6.14:1 | AA | Lc 80.7 | Fine for body text |
| #645E79 text on black | 3.41:1 | AA large text | Lc -21.2 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#EAE9ED
oklch(93.6% 0.005 297.7)
-
Step 200
200
#D9D8E0
oklch(88.5% 0.011 291.9)
-
Step 300
300
#C1BECD
oklch(80.9% 0.021 295.1)
-
Step 400
400
#A29DB4
oklch(70.8% 0.034 295.5)
-
Step 500
500
#8B85A1
oklch(63.2% 0.042 295)
-
Step 600
600
#756E8C
oklch(55.6% 0.047 295.5)
-
Step 700
700 (this color)
#645E79
oklch(49.8% 0.043 295)
-
Step 800
800
#504B61
oklch(42.6% 0.036 295.2)
-
Step 900
900
#423F4F
oklch(37.7% 0.027 293.6)
-
Step 950
950
#27252E
oklch(27% 0.017 295.4)
#645E79 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) | #58627A | 0.020 |
| Deuteranopia (no green cones) | #596178 | 0.019 |
| Tritanopia (no blue cones) | #606267 | 0.036 |
| Achromatopsia (no color) | #626262 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645E79
#645E79
oklch(49.8% 0.043 295)
- #61664A
#61664A
oklch(49.8% 0.043 116.2)
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 #645E79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.034
- Slate #516572 ΔE 0.038
- Dim Gray #696969 ΔE 0.049
- Dusk #4E5481 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.054
- Muted Purple #805B87 ΔE 0.054
- Dusty Purple #825F87 ΔE 0.056
- Dull Purple #84597E ΔE 0.056
Use #645E79 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.