#64389D
Closest named color: Rebecca Purple (#663399). oklch(44.8% 0.158 300.1), rgb(100, 56, 157).
Aa
White text reads best on this color (8.09:1).
About this color
#64389D is a dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.158 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.012 away. White text reads best on it, at 8.09:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.59:1 |
| White text | 8.09:1 |
Values
| HEX | #64389D |
| RGB | rgb(100, 56, 157) |
| HSL | hsl(266, 47%, 42%) |
| OKLCH | oklch(44.8% 0.158 300.1) |
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 #64389D | 8.09:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #64389D | 2.59:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #64389D text on white | 8.09:1 | AAA | Lc 87.5 | Fine for body text |
| #64389D text on black | 2.59:1 | Fails | Lc -14.6 | Not readable |
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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DED2F7
oklch(88.5% 0.052 300.1)
-
Step 300
300
#CAB3F4
oklch(80.9% 0.093 300.5)
-
Step 400
400
#AF89EE
oklch(70.6% 0.148 300)
-
Step 500
500
#9D68E8
oklch(63.2% 0.188 300.2)
-
Step 600
600
#884BD6
oklch(55.6% 0.204 299.9)
-
Step 700
700
#743ABA
oklch(49.1% 0.191 300.1)
-
Step 800
800 (this color)
#64389D
oklch(44.8% 0.158 300.1)
-
Step 900
900
#4D2D78
oklch(37.7% 0.124 300.2)
-
Step 950
950
#2D1B46
oklch(27% 0.078 300.6)
#64389D 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) | #004FA0 | 0.116 |
| Deuteranopia (no green cones) | #0D4F9B | 0.113 |
| Tritanopia (no blue cones) | #584E65 | 0.119 |
| Achromatopsia (no color) | #505050 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64389D
#64389D
oklch(44.8% 0.158 300.1)
- #4D5D00
#4D5D00
oklch(44.9% 0.107 120.6)
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 #64389D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.012
- Blueberry #464196 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
- Bluey Purple #6241C7 ΔE 0.069
- Grape #7209B7 ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.073
- Chrysanthemum #560BAD ΔE 0.076
- Twilight #4E518B ΔE 0.078
Use #64389D 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.