#644173
Closest named color: Dusk (#4E5481). oklch(43.6% 0.09 315.2), rgb(100, 65, 115).
Aa
White text reads best on this color (8.24:1).
About this color
#644173 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.090 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.060 away. White text reads best on it, at 8.24:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.54:1 |
| White text | 8.24:1 |
Values
| HEX | #644173 |
| RGB | rgb(100, 65, 115) |
| HSL | hsl(282, 28%, 35%) |
| OKLCH | oklch(43.6% 0.09 315.2) |
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 #644173 | 8.24:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #644173 | 2.54:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #644173 text on white | 8.24:1 | AAA | Lc 88.4 | Fine for body text |
| #644173 text on black | 2.54:1 | Fails | Lc -13.8 | Not readable |
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 800.
-
Step 50
50
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F1
oklch(93.6% 0.015 316)
-
Step 200
200
#E1D4E7
oklch(88.6% 0.029 315.3)
-
Step 300
300
#CEB7D8
oklch(80.9% 0.052 315.7)
-
Step 400
400
#B591C5
oklch(70.8% 0.084 315.3)
-
Step 500
500
#A275B6
oklch(63.1% 0.107 315.1)
-
Step 600
600
#8D5DA2
oklch(55.7% 0.116 315)
-
Step 700
700
#784C8A
oklch(49.1% 0.108 315.6)
-
Step 800
800 (this color)
#644173
oklch(43.6% 0.09 315.2)
-
Step 900
900
#50365B
oklch(37.9% 0.069 315.4)
-
Step 950
950
#2F2035
oklch(27.1% 0.043 316)
#644173 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) | #384C75 | 0.074 |
| Deuteranopia (no green cones) | #415072 | 0.068 |
| Tritanopia (no blue cones) | #634854 | 0.061 |
| Achromatopsia (no color) | #4F4F4F | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644173
#644173
oklch(43.6% 0.09 315.2)
- #3B5C27
#3B5C27
oklch(43.6% 0.089 135)
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 #644173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.060
- Twilight #4E518B ΔE 0.061
- Dusty Grape #545775 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.067
- Brownish Purple #76424E ΔE 0.072
- Rebecca Purple #663399 ΔE 0.075
- Light Eggplant #894585 ΔE 0.077
- Blueberry #464196 ΔE 0.078
Use #644173 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.