#645190
Closest named color: Twilight (#4E518B). oklch(48.2% 0.1 296.3), rgb(100, 81, 144).
Aa
White text reads best on this color (6.72:1).
About this color
#645190 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.100 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 6.72:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #645190 |
| RGB | rgb(100, 81, 144) |
| HSL | hsl(258, 28%, 44%) |
| OKLCH | oklch(48.2% 0.1 296.3) |
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 #645190 | 6.72:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #645190 | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #645190 text on white | 6.72:1 | AA | Lc 83.1 | Fine for body text |
| #645190 text on black | 3.12:1 | AA large text | Lc -18.9 | 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
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E9
oklch(88.5% 0.026 295.5)
-
Step 300
300
#C3BBDD
oklch(81% 0.048 296.1)
-
Step 400
400
#A597CC
oklch(70.7% 0.078 296.5)
-
Step 500
500
#8F7DBF
oklch(63.2% 0.099 296)
-
Step 600
600
#7A65AB
oklch(55.7% 0.108 296.6)
-
Step 700
700 (this color)
#645190
oklch(48.2% 0.1 296.3)
-
Step 800
800
#534577
oklch(42.7% 0.082 295.6)
-
Step 900
900
#453A60
oklch(37.7% 0.065 296.5)
-
Step 950
950
#282238
oklch(26.9% 0.041 296.1)
#645190 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) | #3E5C92 | 0.059 |
| Deuteranopia (no green cones) | #425B8E | 0.055 |
| Tritanopia (no blue cones) | #5B5C69 | 0.080 |
| Achromatopsia (no color) | #5C5C5C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645190
#645190
oklch(48.2% 0.1 296.3)
- #5B6515
#5B6515
oklch(48.2% 0.101 116.7)
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 #645190, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.037
- Dusk #4E5481 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.053
- Dusty Grape #545775 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.061
- Muted Purple #805B87 ΔE 0.062
- Blueberry #464196 ΔE 0.071
- Light Eggplant #894585 ΔE 0.071
Use #645190 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.