#64379A
Closest named color: Rebecca Purple (#663399). oklch(44.4% 0.155 301.2), rgb(100, 55, 154).
Aa
White text reads best on this color (8.21:1).
About this color
#64379A is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.155 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.009 away. White text reads best on it, at 8.21:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #64379A |
| RGB | rgb(100, 55, 154) |
| HSL | hsl(267, 47%, 41%) |
| OKLCH | oklch(44.4% 0.155 301.2) |
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 #64379A | 8.21:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #64379A | 2.55:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #64379A text on white | 8.21:1 | AAA | Lc 87.9 | Fine for body text |
| #64379A text on black | 2.55:1 | Fails | Lc -14.2 | 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
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#EDE6F9
oklch(93.6% 0.026 302.6)
-
Step 200
200
#DED2F6
oklch(88.5% 0.051 300.6)
-
Step 300
300
#CAB3F2
oklch(80.8% 0.091 301.1)
-
Step 400
400
#B189EC
oklch(70.7% 0.145 301.4)
-
Step 500
500
#9E68E6
oklch(63.1% 0.185 301)
-
Step 600
600
#8A4BD4
oklch(55.7% 0.202 301.2)
-
Step 700
700
#753BB7
oklch(49.1% 0.187 301.2)
-
Step 800
800 (this color)
#64379A
oklch(44.4% 0.155 301.2)
-
Step 900
900
#4E2D76
oklch(37.7% 0.121 301.7)
-
Step 950
950
#2D1B45
oklch(26.9% 0.077 301.2)
#64379A 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) | #004E9D | 0.118 |
| Deuteranopia (no green cones) | #124E98 | 0.113 |
| Tritanopia (no blue cones) | #594D63 | 0.117 |
| Achromatopsia (no color) | #4F4F4F | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64379A
#64379A
oklch(44.4% 0.155 301.2)
- #4B5C00
#4B5C00
oklch(44.4% 0.107 121.3)
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 #64379A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.009
- Blueberry #464196 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.056
- Grape #7209B7 ΔE 0.073
- Bluey Purple #6241C7 ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.076
- Twilight #4E518B ΔE 0.078
- Blue With A Hint Of Purple #533CC6 ΔE 0.078
Use #64379A 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.