#64539E
Closest named color: Twilight (#4E518B). oklch(49.4% 0.117 292), rgb(100, 83, 158).
Aa
White text reads best on this color (6.41:1).
About this color
#64539E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.117 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.047 away. White text reads best on it, at 6.41:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #64539E |
| RGB | rgb(100, 83, 158) |
| HSL | hsl(254, 31%, 47%) |
| OKLCH | oklch(49.4% 0.117 292) |
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 #64539E | 6.41:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #64539E | 3.27:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #64539E text on white | 6.41:1 | AA | Lc 81.7 | Fine for body text |
| #64539E text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6ED
oklch(88.5% 0.031 291.7)
-
Step 300
300
#C1BBE3
oklch(81% 0.056 292)
-
Step 400
400
#A196D5
oklch(70.6% 0.092 291.9)
-
Step 500
500
#8B7BCA
oklch(63% 0.117 292)
-
Step 600
600
#7663B6
oklch(55.5% 0.126 292.3)
-
Step 700
700 (this color)
#64539E
oklch(49.4% 0.117 292)
-
Step 800
800
#51437F
oklch(42.6% 0.097 292.5)
-
Step 900
900
#433966
oklch(37.7% 0.076 292.6)
-
Step 950
950
#27223C
oklch(27.1% 0.048 291.7)
#64539E 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) | #3960A1 | 0.064 |
| Deuteranopia (no green cones) | #3B5D9C | 0.060 |
| Tritanopia (no blue cones) | #566271 | 0.096 |
| Achromatopsia (no color) | #5F5F5F | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64539E
#64539E
oklch(49.4% 0.117 292)
- #646700
#646700
oklch(49.5% 0.109 111.8)
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 #64539E, closest first.
No curated palette has a color within ΔE 0.04 of #64539E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.047
- Dusky Blue #475F94 ΔE 0.055
- Iris #6258C4 ΔE 0.060
- Dusk #4E5481 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.065
- Muted Purple #805B87 ΔE 0.069
- Blueberry #464196 ΔE 0.072
- French Blue #436BAD ΔE 0.073
Use #64539E 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.