#64457B
Closest named color: Twilight (#4E518B). oklch(44.8% 0.092 309.5), rgb(100, 69, 123).
Aa
White text reads best on this color (7.83:1).
About this color
#64457B is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.092 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.049 away. White text reads best on it, at 7.83:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.67:1 |
| White text | 7.83:1 |
Values
| HEX | #64457B |
| RGB | rgb(100, 69, 123) |
| HSL | hsl(274, 28%, 38%) |
| OKLCH | oklch(44.8% 0.092 309.5) |
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 #64457B | 7.83:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #64457B | 2.67:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #64457B text on white | 7.83:1 | AAA | Lc 87.1 | Fine for body text |
| #64457B text on black | 2.67:1 | Fails | Lc -15.0 | 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 800.
-
Step 50
50
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F2
oklch(93.6% 0.016 310.1)
-
Step 200
200
#DFD4E8
oklch(88.5% 0.03 310.1)
-
Step 300
300
#CBB8DB
oklch(81% 0.053 309.5)
-
Step 400
400
#B192CA
oklch(70.8% 0.087 309.4)
-
Step 500
500
#9D76BC
oklch(63.1% 0.11 309.1)
-
Step 600
600
#885EA8
oklch(55.6% 0.119 309.1)
-
Step 700
700
#744D90
oklch(49.2% 0.112 309.7)
-
Step 800
800 (this color)
#64457B
oklch(44.8% 0.092 309.5)
-
Step 900
900
#4D365E
oklch(37.7% 0.072 309.7)
-
Step 950
950
#2D2037
oklch(27% 0.045 309.5)
#64457B 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) | #39507D | 0.071 |
| Deuteranopia (no green cones) | #41527A | 0.064 |
| Tritanopia (no blue cones) | #614D5A | 0.066 |
| Achromatopsia (no color) | #525252 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64457B
#64457B
oklch(44.8% 0.092 309.5)
- #445E22
#445E22
oklch(44.7% 0.092 129.2)
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 #64457B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.049
- Dusk #4E5481 ΔE 0.051
- Dusty Grape #545775 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.064
- Rebecca Purple #663399 ΔE 0.069
- Blueberry #464196 ΔE 0.071
- Light Eggplant #894585 ΔE 0.071
- YInMn Blue #415A77 ΔE 0.079
Use #64457B 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.