#64538E
Closest named color: Twilight (#4E518B). oklch(48.5% 0.094 296), rgb(100, 83, 142).
Aa
White text reads best on this color (6.62:1).
About this color
#64538E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.094 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 6.62:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.16:1 |
| White text | 6.62:1 |
Values
| HEX | #64538E |
| RGB | rgb(100, 83, 142) |
| HSL | hsl(257, 26%, 44%) |
| OKLCH | oklch(48.5% 0.094 296) |
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 #64538E | 6.62:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #64538E | 3.16:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #64538E text on white | 6.62:1 | AA | Lc 82.7 | Fine for body text |
| #64538E text on black | 3.16:1 | AA large text | Lc -19.2 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E8
oklch(88.5% 0.025 296.1)
-
Step 300
300
#C3BBDB
oklch(80.9% 0.045 296.8)
-
Step 400
400
#A498C9
oklch(70.7% 0.072 295.7)
-
Step 500
500
#8E7EBC
oklch(63.2% 0.093 295.5)
-
Step 600
600
#7966A8
oklch(55.6% 0.102 296.2)
-
Step 700
700 (this color)
#64538E
oklch(48.5% 0.094 296)
-
Step 800
800
#534575
oklch(42.6% 0.079 296.3)
-
Step 900
900
#443B5E
oklch(37.7% 0.06 295.2)
-
Step 950
950
#282237
oklch(26.9% 0.039 296.8)
#64538E 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) | #425D90 | 0.053 |
| Deuteranopia (no green cones) | #455C8C | 0.050 |
| Tritanopia (no blue cones) | #5B5D69 | 0.076 |
| Achromatopsia (no color) | #5D5D5D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64538E
#64538E
oklch(48.5% 0.094 296)
- #5D651E
#5D651E
oklch(48.5% 0.094 115.5)
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 #64538E, 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 0.042
- Dusky Blue #475F94 ΔE 0.050
- Dusty Grape #545775 ΔE 0.053
- Muted Purple #805B87 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.059
- Dusty Purple #825F87 ΔE 0.067
- Dull Purple #84597E ΔE 0.067
Use #64538E 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.