#646090
Closest named color: Dusky Blue (#475F94). oklch(51.3% 0.075 287.2), rgb(100, 96, 144).
Aa
White text reads best on this color (5.80:1).
About this color
#646090 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.075 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.042 away. White text reads best on it, at 5.80:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #646090 |
| RGB | rgb(100, 96, 144) |
| HSL | hsl(245, 20%, 47%) |
| OKLCH | oklch(51.3% 0.075 287.2) |
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 #646090 | 5.80:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #646090 | 3.61:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #646090 text on white | 5.80:1 | AA | Lc 79.0 | Fine for body text |
| #646090 text on black | 3.61:1 | AA large text | Lc -22.8 | 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 700.
-
Step 50
50
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F1
oklch(93.6% 0.011 286.2)
-
Step 200
200
#D8D7E6
oklch(88.4% 0.02 289)
-
Step 300
300
#BEBED8
oklch(81% 0.036 285.6)
-
Step 400
400
#9E9CC4
oklch(70.8% 0.058 287.1)
-
Step 500
500
#8683B5
oklch(63.2% 0.075 286.8)
-
Step 600
600
#706CA0
oklch(55.6% 0.08 287)
-
Step 700
700 (this color)
#646090
oklch(51.3% 0.075 287.2)
-
Step 800
800
#4D4A70
oklch(42.9% 0.062 287.1)
-
Step 900
900
#403E5A
oklch(37.8% 0.047 287.2)
-
Step 950
950
#252435
oklch(26.9% 0.031 286.8)
#646090 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) | #526692 | 0.029 |
| Deuteranopia (no green cones) | #52648F | 0.027 |
| Tritanopia (no blue cones) | #5A6971 | 0.066 |
| Achromatopsia (no color) | #656565 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646090
#646090
oklch(51.3% 0.075 287.2)
- #6C6A34
#6C6A34
oklch(51.3% 0.075 106.9)
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 #646090, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.042
- Muted Purple #805B87 ΔE 0.047
- Dusty Purple #825F87 ΔE 0.051
- Dusk #4E5481 ΔE 0.054
- Dusty Grape #545775 ΔE 0.054
- Denim #3B638C ΔE 0.055
- Twilight #4E518B ΔE 0.057
- Dull Purple #84597E ΔE 0.059
Use #646090 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.