#644685
Closest named color: Twilight (#4E518B). oklch(45.5% 0.104 304.6), rgb(100, 70, 133).
Aa
White text reads best on this color (7.61:1).
About this color
#644685 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.104 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.044 away. White text reads best on it, at 7.61:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #644685 |
| RGB | rgb(100, 70, 133) |
| HSL | hsl(269, 31%, 40%) |
| OKLCH | oklch(45.5% 0.104 304.6) |
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 #644685 | 7.61:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #644685 | 2.75:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #644685 text on white | 7.61:1 | AAA | Lc 86.3 | Fine for body text |
| #644685 text on black | 2.75:1 | Fails | Lc -15.8 | 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 800.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DED4EC
oklch(88.5% 0.034 304.5)
-
Step 300
300
#C9B7E1
oklch(80.8% 0.061 304.5)
-
Step 400
400
#AE91D2
oklch(70.7% 0.098 304.4)
-
Step 500
500
#9B75C6
oklch(63.2% 0.124 304.7)
-
Step 600
600
#865CB2
oklch(55.6% 0.135 305)
-
Step 700
700
#714B99
oklch(49% 0.126 304.7)
-
Step 800
800 (this color)
#644685
oklch(45.5% 0.104 304.6)
-
Step 900
900
#4B3564
oklch(37.6% 0.082 304.3)
-
Step 950
950
#2C203B
oklch(27.1% 0.051 303.6)
#644685 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) | #355387 | 0.075 |
| Deuteranopia (no green cones) | #3D5483 | 0.069 |
| Tritanopia (no blue cones) | #5F515F | 0.078 |
| Achromatopsia (no color) | #545454 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644685
#644685
oklch(45.5% 0.104 304.6)
- #4A6012
#4A6012
oklch(45.5% 0.104 124.6)
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 #644685, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.044
- Dusk #4E5481 ΔE 0.052
- Rebecca Purple #663399 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.059
- Blueberry #464196 ΔE 0.062
- Dusty Grape #545775 ΔE 0.064
- Light Eggplant #894585 ΔE 0.069
- Dusky Blue #475F94 ΔE 0.076
Use #644685 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.