#645173
Closest named color: Dusty Grape (#545775). oklch(46.7% 0.058 309.6), rgb(100, 81, 115).
Aa
White text reads best on this color (7.07:1).
About this color
#645173 is a medium-dark, muted purple. In OKLCH its lightness is 47%, its chroma 0.058 and its hue 310°. 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 7.07:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #645173 |
| RGB | rgb(100, 81, 115) |
| HSL | hsl(274, 17%, 38%) |
| OKLCH | oklch(46.7% 0.058 309.6) |
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 #645173 | 7.07:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #645173 | 2.96:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #645173 text on white | 7.07:1 | AAA | Lc 84.5 | Fine for body text |
| #645173 text on black | 2.96:1 | Fails | Lc -17.5 | 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
#EBE8EE
oklch(93.5% 0.009 308.4)
-
Step 200
200
#DCD6E1
oklch(88.4% 0.016 310.1)
-
Step 300
300
#C6BCCF
oklch(80.9% 0.028 309.2)
-
Step 400
400
#A999B6
oklch(70.6% 0.045 309.9)
-
Step 500
500
#9480A4
oklch(63.1% 0.058 309.8)
-
Step 600
600
#7E698F
oklch(55.5% 0.063 309.5)
-
Step 700
700 (this color)
#645173
oklch(46.7% 0.058 309.6)
-
Step 800
800
#574863
oklch(42.8% 0.048 309.6)
-
Step 900
900
#483C51
oklch(37.7% 0.038 310.4)
-
Step 950
950
#2A232F
oklch(26.9% 0.024 311)
#645173 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) | #4B5774 | 0.041 |
| Deuteranopia (no green cones) | #4F5972 | 0.039 |
| Tritanopia (no blue cones) | #62555D | 0.042 |
| Achromatopsia (no color) | #585858 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645173
#645173
oklch(46.7% 0.058 309.6)
- #4F613D
#4F613D
oklch(46.8% 0.06 130)
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 #645173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.029
- Dusk #4E5481 ΔE 0.040
- Twilight #4E518B ΔE 0.052
- YInMn Blue #415A77 ΔE 0.055
- Slate #516572 ΔE 0.064
- Dull Purple #84597E ΔE 0.064
- Muted Purple #805B87 ΔE 0.064
- Dark Mauve #874C62 ΔE 0.067
Use #645173 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.