#645186
Closest named color: Twilight (#4E518B). oklch(47.7% 0.086 299.7), rgb(100, 81, 134).
Aa
White text reads best on this color (6.85:1).
About this color
#645186 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.086 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.036 away. White text reads best on it, at 6.85:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.086) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.06:1 |
| White text | 6.85:1 |
Values
| HEX | #645186 |
| RGB | rgb(100, 81, 134) |
| HSL | hsl(262, 25%, 42%) |
| OKLCH | oklch(47.7% 0.086 299.7) |
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 #645186 | 6.85:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #645186 | 3.06:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #645186 text on white | 6.85:1 | AA | Lc 83.6 | Fine for body text |
| #645186 text on black | 3.06:1 | AA large text | Lc -18.3 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EBE8F1
oklch(93.6% 0.012 301.3)
-
Step 200
200
#DBD6E7
oklch(88.5% 0.024 299.3)
-
Step 300
300
#C4BBD8
oklch(80.9% 0.041 299.6)
-
Step 400
400
#A698C5
oklch(70.7% 0.066 298.9)
-
Step 500
500
#917EB6
oklch(63.2% 0.085 299.5)
-
Step 600
600
#7B66A2
oklch(55.5% 0.094 299.4)
-
Step 700
700 (this color)
#645186
oklch(47.7% 0.086 299.7)
-
Step 800
800
#554670
oklch(42.8% 0.07 299.9)
-
Step 900
900
#463B5B
oklch(37.8% 0.055 299.6)
-
Step 950
950
#292335
oklch(27.1% 0.034 299.4)
#645186 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) | #445A88 | 0.051 |
| Deuteranopia (no green cones) | #475A85 | 0.049 |
| Tritanopia (no blue cones) | #5E5A65 | 0.068 |
| Achromatopsia (no color) | #5A5A5A | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645186
#645186
oklch(47.7% 0.086 299.7)
- #576427
#576427
oklch(47.8% 0.087 119.9)
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 #645186, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.036
- Dusk #4E5481 ΔE 0.037
- Dusty Grape #545775 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.055
- Muted Purple #805B87 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.062
- YInMn Blue #415A77 ΔE 0.065
- Dull Purple #84597E ΔE 0.065
Use #645186 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.