#644A7F
Closest named color: Twilight (#4E518B). oklch(45.9% 0.089 305.8), rgb(100, 74, 127).
Aa
White text reads best on this color (7.42:1).
About this color
#644A7F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.089 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.041 away. White text reads best on it, at 7.42:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.82:1 |
| White text | 7.42:1 |
Values
| HEX | #644A7F |
| RGB | rgb(100, 74, 127) |
| HSL | hsl(269, 26%, 39%) |
| OKLCH | oklch(45.9% 0.089 305.8) |
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 #644A7F | 7.42:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #644A7F | 2.82:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #644A7F text on white | 7.42:1 | AAA | Lc 85.7 | Fine for body text |
| #644A7F text on black | 2.82:1 | Fails | Lc -16.3 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DDD5E6
oklch(88.4% 0.025 306.9)
-
Step 300
300
#C7BAD7
oklch(80.9% 0.043 305.7)
-
Step 400
400
#AB96C3
oklch(70.7% 0.068 305.9)
-
Step 500
500
#967CB4
oklch(63.1% 0.087 305.3)
-
Step 600
600
#8164A0
oklch(55.6% 0.096 305.7)
-
Step 700
700 (this color)
#644A7F
oklch(45.9% 0.089 305.8)
-
Step 800
800
#59446F
oklch(42.7% 0.074 305.9)
-
Step 900
900
#49395A
oklch(37.6% 0.058 306)
-
Step 950
950
#2B2235
oklch(27.1% 0.037 305.8)
#644A7F 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) | #3E5481 | 0.062 |
| Deuteranopia (no green cones) | #44557E | 0.057 |
| Tritanopia (no blue cones) | #60525E | 0.066 |
| Achromatopsia (no color) | #555555 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644A7F
#644A7F
oklch(45.9% 0.089 305.8)
- #4C6025
#4C6025
oklch(45.9% 0.088 125.4)
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 #644A7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.041
- Dusk #4E5481 ΔE 0.043
- Dusty Grape #545775 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.068
- Light Eggplant #894585 ΔE 0.069
- Dusky Blue #475F94 ΔE 0.070
- YInMn Blue #415A77 ΔE 0.071
- Muted Purple #805B87 ΔE 0.071
Use #644A7F 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.