#645681
Closest named color: Dusty Grape (#545775). oklch(48.4% 0.07 298.7), rgb(100, 86, 129).
Aa
White text reads best on this color (6.58:1).
About this color
#645681 is a medium-dark, muted purple. In OKLCH its lightness is 48%, its chroma 0.070 and its hue 299°. 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 6.58:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.070) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.18:1 |
| White text | 6.58:1 |
Values
| HEX | #645681 |
| RGB | rgb(100, 86, 129) |
| HSL | hsl(260, 20%, 42%) |
| OKLCH | oklch(48.4% 0.07 298.7) |
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 #645681 | 6.58:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #645681 | 3.18:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #645681 text on white | 6.58:1 | AA | Lc 82.5 | Fine for body text |
| #645681 text on black | 3.18:1 | AA large text | Lc -19.4 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE8F0
oklch(93.5% 0.011 297.6)
-
Step 200
200
#DAD7E4
oklch(88.5% 0.018 296.6)
-
Step 300
300
#C3BCD4
oklch(80.8% 0.034 299)
-
Step 400
400
#A59ABE
oklch(70.8% 0.053 299)
-
Step 500
500
#8F81AE
oklch(63.2% 0.068 298.7)
-
Step 600
600
#796A99
oklch(55.7% 0.073 298.6)
-
Step 700
700 (this color)
#645681
oklch(48.4% 0.07 298.7)
-
Step 800
800
#53486A
oklch(42.7% 0.057 298.8)
-
Step 900
900
#453C56
oklch(37.6% 0.045 300.1)
-
Step 950
950
#282333
oklch(26.9% 0.03 298.7)
#645681 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) | #4C5D83 | 0.039 |
| Deuteranopia (no green cones) | #4E5D80 | 0.038 |
| Tritanopia (no blue cones) | #5F5D66 | 0.055 |
| Achromatopsia (no color) | #5D5D5D | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645681
#645681
oklch(48.4% 0.07 298.7)
- #5B6436
#5B6436
oklch(48.4% 0.068 118.1)
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 #645681, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.034
- Dusk #4E5481 ΔE 0.036
- Twilight #4E518B ΔE 0.043
- Dusky Blue #475F94 ΔE 0.051
- Muted Purple #805B87 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.056
- Dull Purple #84597E ΔE 0.057
- Dusty Purple #825F87 ΔE 0.059
Use #645681 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.