#646597
Closest named color: Dusky Blue (#475F94). oklch(52.7% 0.078 282.5), rgb(100, 101, 151).
Aa
White text reads best on this color (5.45:1).
About this color
#646597 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 53%, its chroma 0.078 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.046 away. White text reads best on it, at 5.45:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #646597 |
| RGB | rgb(100, 101, 151) |
| HSL | hsl(239, 20%, 49%) |
| OKLCH | oklch(52.7% 0.078 282.5) |
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 #646597 | 5.45:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #646597 | 3.85:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #646597 text on white | 5.45:1 | AA | Lc 77.2 | Fine for body text |
| #646597 text on black | 3.85:1 | AA large text | Lc -24.6 | 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 600.
-
Step 50
50
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D7D8E6
oklch(88.6% 0.019 282.7)
-
Step 300
300
#BDBED7
oklch(80.9% 0.035 283.8)
-
Step 400
400
#9B9DC3
oklch(70.8% 0.055 282.5)
-
Step 500
500
#8384B4
oklch(63.1% 0.072 283.2)
-
Step 600
600 (this color)
#646597
oklch(52.7% 0.078 282.5)
-
Step 700
700
#5A5B89
oklch(49% 0.073 282.4)
-
Step 800
800
#4A4B6F
oklch(42.8% 0.059 282.4)
-
Step 900
900
#3E3E5A
oklch(37.6% 0.048 283.9)
-
Step 950
950
#242535
oklch(27.1% 0.03 281.4)
#646597 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) | #566B99 | 0.024 |
| Deuteranopia (no green cones) | #546896 | 0.023 |
| Tritanopia (no blue cones) | #576E77 | 0.068 |
| Achromatopsia (no color) | #696969 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646597
#646597
oklch(52.7% 0.078 282.5)
- #746D34
#746D34
oklch(52.8% 0.078 102.4)
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 #646597, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.046
- French Blue #436BAD ΔE 0.051
- Muted Purple #805B87 ΔE 0.052
- Dull Blue #49759C ΔE 0.052
- Metallic Blue #4F738E ΔE 0.053
- Dusty Purple #825F87 ΔE 0.053
- Dark Lavender #856798 ΔE 0.054
- Muted Blue #3B719F ΔE 0.055
Use #646597 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.