#645B80
Closest named color: Dusty Grape (#545775). oklch(49.4% 0.059 295.3), rgb(100, 91, 128).
Aa
White text reads best on this color (6.26:1).
About this color
#645B80 is a medium-dark, muted purple. In OKLCH its lightness is 49%, its chroma 0.059 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 6.26:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.35:1 |
| White text | 6.26:1 |
Values
| HEX | #645B80 |
| RGB | rgb(100, 91, 128) |
| HSL | hsl(255, 17%, 43%) |
| OKLCH | oklch(49.4% 0.059 295.3) |
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 #645B80 | 6.26:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #645B80 | 3.35:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #645B80 text on white | 6.26:1 | AA | Lc 81.2 | Fine for body text |
| #645B80 text on black | 3.35:1 | AA large text | Lc -20.7 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E3
oklch(88.5% 0.017 297.5)
-
Step 300
300
#C2BDD2
oklch(80.9% 0.03 296.6)
-
Step 400
400
#A29BBB
oklch(70.6% 0.047 295.2)
-
Step 500
500
#8C83AA
oklch(63.2% 0.059 295.3)
-
Step 600
600
#766C95
oklch(55.6% 0.064 295.4)
-
Step 700
700 (this color)
#645B80
oklch(49.4% 0.059 295.3)
-
Step 800
800
#514A67
oklch(42.8% 0.048 295.4)
-
Step 900
900
#433E54
oklch(37.8% 0.038 295)
-
Step 950
950
#272431
oklch(26.9% 0.024 295.3)
#645B80 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) | #526182 | 0.030 |
| Deuteranopia (no green cones) | #54607F | 0.027 |
| Tritanopia (no blue cones) | #5F6168 | 0.049 |
| Achromatopsia (no color) | #606060 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645B80
#645B80
oklch(49.4% 0.059 295.3)
- #60663E
#60663E
oklch(49.5% 0.06 115.6)
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 #645B80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.033
- Dusk #4E5481 ΔE 0.042
- Muted Purple #805B87 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.050
- Slate #516572 ΔE 0.050
- Twilight #4E518B ΔE 0.053
- Dusty Purple #825F87 ΔE 0.054
- Dull Purple #84597E ΔE 0.054
Use #645B80 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.